{"id":259,"date":"2026-07-31T07:02:43","date_gmt":"2026-07-31T07:02:43","guid":{"rendered":"https:\/\/5speedtransmission.com\/?post_type=product&p=259"},"modified":"2026-07-31T07:02:43","modified_gmt":"2026-07-31T07:02:43","slug":"finished-bore-sprockets-asian-standard","status":"publish","type":"product","link":"https:\/\/5speedtransmission.com\/sv\/produkt\/finished-bore-sprockets-asian-standard\/","title":{"rendered":"F\u00e4rdiga borrhjul Asiatisk standard"},"content":{"rendered":"
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<\/p>\n

\n
\n

25B \u2013 120B<\/p>\n

Kedjestorleksintervall<\/p>\n<\/div>\n

\n

FBN \/ FBK<\/p>\n

Typ FBN (B) och FBK (B+F)<\/p>\n<\/div>\n

\n

JIS B1801<\/p>\n

Asiatisk standard<\/p>\n<\/div>\n

\n

ISO 9001<\/p>\n

Certifierad kvalitet<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Asiatisk standardiserad f\u00e4rdigborrad kedjehjul \u2013 Produkt\u00f6versikt<\/h2>\n
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\n

Det f\u00e4rdiga h\u00e5lsortimentet tillverkas i tv\u00e5 navtyper: FBN (typ B)<\/strong> \u2014 ett rakt nav med h\u00e5l, kilsp\u00e5r och st\u00e4llskruv, levererat med kilsp\u00e5ret centrerat p\u00e5 kuggens mittlinje (inte mellan t\u00e4nderna som i vissa andra standarder). Kilsp\u00e5rets placering p\u00e5 kuggens mitt g\u00f6r att kilen \u00e4r synlig uppifr\u00e5n n\u00e4r kedjehjulet \u00e4r monterat p\u00e5 axeln, vilket g\u00f6r uppriktningskontroller enklare. FBK (Typ B+F)<\/strong> \u2014 samma nav med en extra fl\u00e4ns, som anv\u00e4nds f\u00f6r applikationer som kr\u00e4ver positiv lateral retention eller inf\u00e4stning p\u00e5 en axelskuldra.<\/p>\n

The range covers chain sizes 25B (3\/16″ pitch) through 120B (1\u00bd” pitch), in simplex. Material is C45 carbon steel with induction-hardened teeth for sizes 35B and above. For 25B light-duty chain, the sprocket is un-hardened plain C45. Stainless steel (SUS304) variants are available for 25B (food and pharmaceutical) \u2014 designated SUSFBP. For the Asian stock bore range (NK type) see our Asiatiska originalborrade kedjehjul<\/a>Bl\u00e4ddra bland full kedjekategori<\/a>.<\/p>\n

 <\/p>\n<\/div>\n

\"Korea
\n<\/p>\n
\n

\ud83c\udf0f Asiatisk vs ANSI vs europeisk \u2014 samma tonh\u00f6jd, annan kedja<\/p>\n

F\u00f6r samma stigning (t.ex. \u00bd\u2033 \/ 12,7 mm) har de tre standarderna olika rulldiametrar:<\/p>\n\n\n\n\n\n\n
Stigning \u00bd\u2033<\/th>\nRulle-\u00d8<\/th>\nStandard<\/th>\n<\/tr>\n
40B (asiatisk\/JIS)<\/td>\n7,92 mm<\/td>\nJIS B1801<\/td>\n<\/tr>\n
#40 (amerikansk)<\/td>\n7,95 mm<\/td>\nANSI B29.1<\/td>\n<\/tr>\n
08B (europeisk)<\/td>\n8,51 mm<\/td>\nDIN 8187<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u26a0\ufe0f Blanda inte kedjestandarder \u2014 den st\u00f6rre DIN 08B-rullen kommer inte att sitta korrekt p\u00e5 asiatiska eller ANSI-kuggprofiler.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Keyway Placering \u2014 Asiatisk standardskillnad<\/h2>\n

Asiatiska standarddrev har kilsp\u00e5ret bearbetat p\u00e5 kuggens mittlinje \u2013 i linje med kuggens mittpunkt, inte mellan t\u00e4nderna. Detta skiljer sig fr\u00e5n europeiska DIN 8187- och amerikanska ANSI B29.1-drev, d\u00e4r kilsp\u00e5ret vanligtvis \u00e4r placerat mellan t\u00e4nderna. Skillnaden \u00e4r viktig av tv\u00e5 sk\u00e4l:<\/p>\n

\n
\n

\u2714 Visuell installationsbekr\u00e4ftelse<\/p>\n

Med kilsp\u00e5ret p\u00e5 kuggens mittlinje kan ingenj\u00f6ren bekr\u00e4fta korrekt installationsposition genom att titta p\u00e5 toppen av det installerade kugghjulet \u2013 kuggen direkt ovanf\u00f6r kilen ska vara centrerad \u00f6ver kilsp\u00e5rets markering p\u00e5 axeln. Denna visuella kontroll \u00e4r s\u00e4rskilt anv\u00e4ndbar vid installation av stora kugghjul d\u00e4r det \u00e4r sv\u00e5rt att m\u00e4ta kugghjulets position.<\/p>\n<\/div>\n

\n

\u26a0\ufe0f Ers\u00e4tt inte europeiskt\/ANSI-drev<\/p>\n

Ett europeiskt eller ANSI-drev kan inte ers\u00e4tta ett asiatiskt standarddrev p\u00e5 en asiatisk kedja, \u00e4ven om stigningen och borrningen \u00e4r desamma. Kuggprofilen \u2013 s\u00e4teskurvans radie, kuggbredd och kuggvinkel \u2013 skiljer sig \u00e5t mellan standarderna. Om kedjan och kugghjulet inte passar ihop orsakar det d\u00e5ligt rullingrepp, snabbare slitage och f\u00f6r tidigt kugghjulshaveri inom n\u00e5gra veckor efter installationen.<\/p>\n<\/div>\n

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\ud83d\udcd0 JIS B1301 kilsp\u00e5rsstandard<\/p>\n

Kilsp\u00e5rsdimensioner \u00f6verensst\u00e4mmer med JIS B1301 (reviderad 1976) \u2013 den japanska standarden f\u00f6r parallella kilar och kilsp\u00e5r i metriska h\u00e5lstorlekar. Denna \u00e4r dimensionellt n\u00e4ra DIN 6885 men anv\u00e4nder n\u00e5got olika djupproportioner f\u00f6r sm\u00e5 h\u00e5lstorlekar (under 22 mm). Anv\u00e4nd alltid en JIS B1301- eller DIN 6885-nyckel i asiatiska standardkedjehjul \u2013 anv\u00e4nd inte ASME B17,1-tums nycklar, som har olika bredd-till-djup-f\u00f6rh\u00e5llanden.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Nyckel:<\/strong> Z = t\u00e4nder | De = spetsdiameter (mm) | Dp = stigningscirkeldiameter (mm) | BD = alternativ f\u00f6r borrdiameter (mm) | BL = borrl\u00e4ngd (mm) | a = kilsp\u00e5rsbredd (mm) | FBN = Typ B-nav; FBK = Typ B med fl\u00e4ns; SUSFBP = SUS304 rostfritt st\u00e5lSpecifikationer f\u00f6r f\u00e4rdiga kedjehjul \u2014 35B till 100B<\/span><\/p>\n<\/div>\n

 <\/p>\n

35B | Stigning 9,525 mm | Rull-\u00d8 5,08 mm | Innerbredd 4,78 mm | C45-h\u00e4rdad<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Z<\/th>\nDeck (mm)<\/th>\nDp (mm)<\/th>\nBD-alternativ (mm)<\/th>\nBL (mm)<\/th>\nett kilsp\u00e5r (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n32<\/td>\n27.85<\/td>\n*21,5 (pilot)<\/td>\n20<\/td>\n6<\/td>\n<\/tr>\n
11<\/td>\n38<\/td>\n33.81<\/td>\n*27 (pilot)<\/td>\n20<\/td>\n6<\/td>\n<\/tr>\n
13<\/td>\n44<\/td>\n39.80<\/td>\n10, 12, 14, 15, 16<\/td>\n20<\/td>\n4\u20135<\/td>\n<\/tr>\n
17<\/td>\n56<\/td>\n51.83<\/td>\n10, 12, 14, 15, 16<\/td>\n20<\/td>\n5<\/td>\n<\/tr>\n
25<\/td>\n80<\/td>\n76.00<\/td>\n14, 15, 16<\/td>\n20<\/td>\n5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

40B | Stigning 12,70 mm | Rull-\u00d8 7,92 mm | Innerbredd 7,85 mm | C45-h\u00e4rdad<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n
Z<\/th>\nDeck (mm)<\/th>\nDp (mm)<\/th>\nBD-alternativ (mm)<\/th>\nBL (mm)<\/th>\nett kilsp\u00e5r (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n42<\/td>\n37.13<\/td>\n*28 (pilot)<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
12<\/td>\n55<\/td>\n49.07<\/td>\n10, 12, 14, 15, 16, 17<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
15<\/td>\n67<\/td>\n61.09<\/td>\n12, 14, 15, 16, 17, 18<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
17<\/td>\n75<\/td>\n69.11<\/td>\n12, 14, 15, 16, 17, 18, 19, 20<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
20<\/td>\n88<\/td>\n81.19<\/td>\n14, 15, 16, 17, 18, 19, 20<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
25<\/td>\n108<\/td>\n101.33<\/td>\n14, 15, 17, 18, 19, 20<\/td>\n22<\/td>\n6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

60B | Stigning 19,05 mm | Rull-\u00d8 11,91 mm | Innerbredd 12,07 mm | C45-h\u00e4rdad<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Z<\/th>\nDeck (mm)<\/th>\nDp (mm)<\/th>\nBD-alternativ (mm)<\/th>\nBL (mm)<\/th>\nett kilsp\u00e5r (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n63<\/td>\n58.10<\/td>\n32<\/td>\n35<\/td>\n8<\/td>\n<\/tr>\n
11<\/td>\n76<\/td>\n71.56<\/td>\n30, 32, 35<\/td>\n35<\/td>\n8<\/td>\n<\/tr>\n
13<\/td>\n89<\/td>\n84.92<\/td>\n30, 32, 35, 38, 40<\/td>\n35<\/td>\n10<\/td>\n<\/tr>\n
17<\/td>\n114<\/td>\n109.97<\/td>\n32, 35, 38, 40, 42, 45<\/td>\n35<\/td>\n10<\/td>\n<\/tr>\n
21<\/td>\n139<\/td>\n135.64<\/td>\n35, 38, 40, 42, 45, 48<\/td>\n40<\/td>\n12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

80B | Stigning 25,40 mm | Rull-\u00d8 15,88 mm | Innerbredd 15,88 mm | C45-h\u00e4rdad<\/h3>\n
\n\n\n\n\n\n\n\n\n
Z<\/th>\nDeck (mm)<\/th>\nDp (mm)<\/th>\nBD-alternativ (mm)<\/th>\nBL (mm)<\/th>\nett kilsp\u00e5r (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n84<\/td>\n77.52<\/td>\n44 (pilot)<\/td>\n42<\/td>\n12<\/td>\n<\/tr>\n
13<\/td>\n117<\/td>\n113.27<\/td>\n40, 42, 45, 48<\/td>\n42<\/td>\n12<\/td>\n<\/tr>\n
17<\/td>\n151<\/td>\n146.28<\/td>\n42, 45, 48, 50<\/td>\n42<\/td>\n14<\/td>\n<\/tr>\n
21<\/td>\n186<\/td>\n180.75<\/td>\n45, 48, 50, 55<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* = piloth\u00e5l (inget kilsp\u00e5r). Fullt sortiment av borrh\u00e5l och rostfria SUSFBP25B-varianter finns tillg\u00e4ngliga \u2014 kontakta oss. 50B, 100B och 120B finns ocks\u00e5 tillg\u00e4ngliga. Ange kedjestorlek, tandantal, typ (FBN eller FBK) och borrdiameter mm vid best\u00e4llning.<\/p>\n

<\/p>\n

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\"\"<\/p>\n

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Tekniska funktioner<\/h2>\n

\"F\u00e4rdigborrade<\/p>\n

\n
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JIS B1801 Tandprofil<\/h3>\n

Kuggprofilen \u00f6verensst\u00e4mmer med JIS B1801 \u2013 vilket kr\u00e4vs f\u00f6r korrekt ingrepp med asiatisk standardrullkedja. S\u00e4ttningskurvans radie och kuggbredden skiljer sig fr\u00e5n DIN 8187 och ANSI B29.1 eftersom den asiatiska standardrulldiametern skiljer sig n\u00e5got fr\u00e5n b\u00e5da. Att k\u00f6ra asiatisk kedja p\u00e5 europeiska eller amerikanska kedjehjul (eller vice versa) orsakar felaktig rulls\u00e4tning och f\u00f6r tidigt slitage \u00e4ven d\u00e4r stigningen \u00e4r identisk. Kombinera med JIS B1801 asiatisk standardrullkedja<\/a>.<\/p>\n<\/div>\n

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C45 med h\u00e4rdade t\u00e4nder \u2014 35B och h\u00f6gre<\/h3>\n

Alla FBN- och FBK-kedjehjul i 35B till 120B \u00e4r tillverkade av C45-kolst\u00e5l med induktionsh\u00e4rdade kuggflanker vid 52\u201358 HRC. Borrningen bearbetas f\u00f6re v\u00e4rmebehandlingscykeln och dimensioneras efter h\u00e4rdning. 25B-kedjehjul \u00e4r l\u00e4ttare \u2013 sl\u00e4t C45 utan tandh\u00e4rdning, l\u00e4mpliga f\u00f6r l\u00e4tta belastningar i 25B-drivapplikationer. SUS304-varianter i rostfritt st\u00e5l (prefix SUSFBP) har endast glidborrning och \u00e4r oh\u00e4rdade av materialet.<\/p>\n<\/div>\n

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FBK-fl\u00e4nstyp \u2014 Sidoh\u00e5llning<\/h3>\n

FBK-typen har en fl\u00e4nsyta p\u00e5 navet, vilket skapar en lageryta mot en axelskuldra eller krage. Detta kr\u00e4vs i applikationer d\u00e4r kedjehjulet m\u00e5ste h\u00e5llas axiellt p\u00e5 axeln av sin egen geometri snarare \u00e4n att helt f\u00f6rlita sig p\u00e5 st\u00e4llskruven. FBK \u00e4r standardtypen f\u00f6r kedjedrifter i japanska jordbruksmaskiner och materialhanteringsutrustning d\u00e4r kedjehjulets position placeras med hj\u00e4lp av ett axelsteg snarare \u00e4n enbart med en st\u00e4llskruv.<\/p>\n<\/div>\n

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Korea Ever-Power f\u00f6r asiatiska OEM-drivenheter<\/h3>\n

Koreanska industrimaskiner anv\u00e4nder JIS-baserade kedjestandarder f\u00f6r alla inhemska drivningar. Korea Ever-Power asiatiska standarddrev med f\u00e4rdigt borrh\u00e5l \u00e4r den korrekta ers\u00e4ttningen f\u00f6r drivningar i koreansktillverkad utrustning inom alla sektorer \u2013 byggmaskiner, jordbruksutrustning, industritransport\u00f6rer och textilmaskiner. Samma navgeometri, borrstorlekar och kilsp\u00e5rsdimensioner som den ursprungliga koreanska OEM-specifikationen.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

Matchande kedja och relaterade produkter<\/h2>\n
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\"JIS<\/p>\n

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Matchande asiatisk standardrullkedja<\/p>\n

Matcha ditt FBN\/FBK-drev med en asiatisk standardrullkedja enligt JIS B1801 i samma kedjenummer (35B, 40B, 60B, 80B etc.). Standard-, H-serie-, sj\u00e4lvsm\u00f6rjande och SUS304-rostfritt st\u00e5l finns tillg\u00e4ngliga. K\u00f6r aldrig europeisk DIN 8187- eller ANSI B29.1-kedja p\u00e5 asiatiska kedjedrev.<\/p>\n

Visa drivkedjor \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\n

\"Korea<\/p>\n

L\u00f6vkedjor<\/a><\/h3>\n

Bladkedjor i BL- och LH-serien f\u00f6r gaffeltruckmaster, industriportsmotorer och lyftmekanismer. Dragh\u00e5llfasthet fr\u00e5n 11 kN till \u00f6ver 1 600 kN.<\/p>\n

Visa bladkedjor<\/a><\/p>\n<\/div>\n

\n

\"Korea<\/p>\n

Tekniska kedjor<\/a><\/h3>\n

Svetsat st\u00e5l, gjutj\u00e4rn och smidda kedjor f\u00f6r tung industriell transport i st\u00e5lverk, cementfabriker, gruvdrift och kemisk bearbetning.<\/p>\n

Visa tekniska kedjor<\/a><\/p>\n<\/div>\n

\n

\"Korea<\/p>\n

Rostfria st\u00e5lkedjor<\/a><\/h3>\n

Rullkedjor i SUS304 och SUS316L f\u00f6r livsmedels-, l\u00e4kemedels- och kemiska milj\u00f6er. L\u00e4mpliga f\u00f6r avspolning, f\u00f6rh\u00f6jda temperaturer och korrosiva medier.<\/p>\n

Visa SS-kedjor<\/a><\/p>\n<\/div>\n

\n

\"jordbrukskedja-1\"<\/p>\n

Jordbrukskedjor<\/a><\/h3>\n

CA-, CC- och majskedjeserier f\u00f6r sk\u00f6rdetr\u00f6skor, bomullsplockare, balpressar och spridningsutrustning. ISO 487 \/ ASME B29.100-standard.<\/p>\n

Visa jordbrukskedjor<\/a><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n

\"\"<\/p>\n

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Beg\u00e4r offert \u2014 Asiatisk standardbehandlade kedjehjul<\/h3>\n

Ange kedjestorlek (t.ex. 60B), tandantal, typ (FBN eller FBK), borrdiameter i mm. Rostfritt SUSFBP tillg\u00e4ngligt f\u00f6r 25B. Svar inom en arbetsdag.<\/p>\n

F\u00e5 en offert nu<\/a>
\nAlla Sprocket-produkter<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Korea Ever-Powers asiatiska standarddrev med f\u00e4rdigt borrh\u00e5l \u00f6verensst\u00e4mmer med JIS B1801 \u2013 den japanska industristandarden f\u00f6r rullkedjedrev, vilket \u00e4r grunden f\u00f6r den asiatiska standarden som anv\u00e4nds i hela Japan, Sydkorea, Taiwan, Kina och Sydostasien. JIS-kedjedimensionerna skiljer sig fr\u00e5n b\u00e5de ANSI B29.1 och DIN 8187 i rulldiameter och innerbredd, vilket kr\u00e4ver en specifik tandprofil \u2013 asiatisk standardkedja och -drev m\u00e5ste alltid matchas med samma standard.<\/p>","protected":false},"featured_media":236,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"

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25B \u2013 120B<\/p>\r\n

Chain Size Range<\/p>\r\n\r\n<\/div>\r\n

\r\n

FBN \/ FBK<\/p>\r\n

Type FBN (B) & FBK (B+F)<\/p>\r\n\r\n<\/div>\r\n

\r\n

JIS B1801<\/p>\r\n

Asian Standard<\/p>\r\n\r\n<\/div>\r\n

\r\n

ISO 9001<\/p>\r\n

Certified Quality<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n\r\n

Asian Standard Finished Bore Sprockets \u2013 Product Overview<\/h2>\r\n
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\r\n

The finished bore range is produced in two hub types: FBN (Type B)<\/strong> \u2014 a straight hub with a bore, keyway and setscrew, supplied with the keyway centred on the tooth centreline (not between teeth as in some other standards). The keyway-on-tooth-centre arrangement allows the key to be visible from above when the sprocket is mounted on the shaft, making alignment checks easier. FBK (Type B+F)<\/strong> \u2014 the same hub with an additional flange, used for applications requiring positive lateral retention or attachment to a shaft shoulder.<\/p>\r\n

The range covers chain sizes 25B (3\/16\" pitch) through 120B (1\u00bd\" pitch), in simplex. Material is C45 carbon steel with induction-hardened teeth for sizes 35B and above. For 25B light-duty chain, the sprocket is un-hardened plain C45. Stainless steel (SUS304) variants are available for 25B (food and pharmaceutical) \u2014 designated SUSFBP. For the Asian stock bore range (NK type) see our Asian stock bore sprockets<\/a>. Browse the full sprocket category<\/a>.<\/p>\r\n\r\n<\/div>\r\n

\r\n\r\n\"Korea\r\n\r\n
\r\n

\ud83c\udf0f Asian vs ANSI vs European \u2014 same pitch, different chain<\/p>\r\n

For the same pitch (e.g. \u00bd\u2033 \/ 12.7 mm), the three standards have different roller diameters:<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Pitch \u00bd\u2033<\/th>\r\nRoller \u00d8<\/th>\r\nStandard<\/th>\r\n<\/tr>\r\n
40B (Asian\/JIS)<\/td>\r\n7.92 mm<\/td>\r\nJIS B1801<\/td>\r\n<\/tr>\r\n
#40 (American)<\/td>\r\n7.95 mm<\/td>\r\nANSI B29.1<\/td>\r\n<\/tr>\r\n
08B (European)<\/td>\r\n8.51 mm<\/td>\r\nDIN 8187<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

\u26a0\ufe0f Do not mix chain standards \u2014 the larger DIN 08B roller will not seat correctly on Asian or ANSI tooth profiles.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n

\r\n

Keyway Location \u2014 Asian Standard Difference<\/h2>\r\n

Asian standard sprockets have the keyway machined on the tooth centreline \u2014 aligned with the midpoint of a tooth, not between teeth. This is a different convention from European DIN 8187 and American ANSI B29.1 sprockets, where the keyway is typically positioned between teeth. The difference matters for two reasons:<\/p>\r\n\r\n

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\u2714 Visual Installation Confirmation<\/p>\r\n

With the keyway on the tooth centreline, the engineer can confirm correct installation position by looking at the top of the installed sprocket \u2014 the tooth directly above the key should be centred over the keyway mark on the shaft. This visual check is particularly useful during installation of large sprockets where gauging the sprocket position is difficult.<\/p>\r\n\r\n<\/div>\r\n

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\u26a0\ufe0f Do Not Substitute European\/ANSI Sprocket<\/p>\r\n

A European or ANSI sprocket cannot be substituted for an Asian standard sprocket on Asian chain, even if the pitch and bore are the same. The tooth profile \u2014 seating curve radius, tooth width and tooth angle \u2014 differs between standards. Running mismatched chain and sprocket causes poor roller engagement, accelerated wear and premature sprocket failure within weeks of installation.<\/p>\r\n\r\n<\/div>\r\n

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\ud83d\udcd0 JIS B1301 Keyway Standard<\/p>\r\n

Keyway dimensions conform to JIS B1301 (revised 1976) \u2014 the Japanese standard for parallel keys and keyways in metric bore sizes. This is dimensionally close to DIN 6885 but uses slightly different depth proportions for small bore sizes (below 22 mm). Always use a JIS B1301 or DIN 6885 key in Asian standard sprockets \u2014 do not use ASME B17.1 inch keys, which have different width-to-depth ratios.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n

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Key:<\/strong> Z = teeth \u00a0|\u00a0 De = tip diameter (mm) \u00a0|\u00a0 Dp = pitch circle diameter (mm) \u00a0|\u00a0 BD = bore diameter options (mm) \u00a0|\u00a0 BL = bore length (mm) \u00a0|\u00a0 a = keyway width (mm) \u00a0|\u00a0 FBN = Type B hub; FBK = Type B with flange; SUSFBP = SUS304 stainlessFinished Bore Sprocket Specifications \u2014 35B through 100B<\/span><\/p>\r\n\r\n<\/div>\r\n

35B \u00a0|\u00a0 Pitch 9.525 mm \u00a0|\u00a0 Roller \u00d8 5.08 mm \u00a0|\u00a0 Inner width 4.78 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
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Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n32<\/td>\r\n27.85<\/td>\r\n*21.5 (pilot)<\/td>\r\n20<\/td>\r\n6<\/td>\r\n<\/tr>\r\n
11<\/td>\r\n38<\/td>\r\n33.81<\/td>\r\n*27 (pilot)<\/td>\r\n20<\/td>\r\n6<\/td>\r\n<\/tr>\r\n
13<\/td>\r\n44<\/td>\r\n39.80<\/td>\r\n10, 12, 14, 15, 16<\/td>\r\n20<\/td>\r\n4\u20135<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n56<\/td>\r\n51.83<\/td>\r\n10, 12, 14, 15, 16<\/td>\r\n20<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
25<\/td>\r\n80<\/td>\r\n76.00<\/td>\r\n14, 15, 16<\/td>\r\n20<\/td>\r\n5<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

40B \u00a0|\u00a0 Pitch 12.70 mm \u00a0|\u00a0 Roller \u00d8 7.92 mm \u00a0|\u00a0 Inner width 7.85 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
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Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n42<\/td>\r\n37.13<\/td>\r\n*28 (pilot)<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
12<\/td>\r\n55<\/td>\r\n49.07<\/td>\r\n10, 12, 14, 15, 16, 17<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
15<\/td>\r\n67<\/td>\r\n61.09<\/td>\r\n12, 14, 15, 16, 17, 18<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n75<\/td>\r\n69.11<\/td>\r\n12, 14, 15, 16, 17, 18, 19, 20<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
20<\/td>\r\n88<\/td>\r\n81.19<\/td>\r\n14, 15, 16, 17, 18, 19, 20<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
25<\/td>\r\n108<\/td>\r\n101.33<\/td>\r\n14, 15, 17, 18, 19, 20<\/td>\r\n22<\/td>\r\n6<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

60B \u00a0|\u00a0 Pitch 19.05 mm \u00a0|\u00a0 Roller \u00d8 11.91 mm \u00a0|\u00a0 Inner width 12.07 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
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Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n63<\/td>\r\n58.10<\/td>\r\n32<\/td>\r\n35<\/td>\r\n8<\/td>\r\n<\/tr>\r\n
11<\/td>\r\n76<\/td>\r\n71.56<\/td>\r\n30, 32, 35<\/td>\r\n35<\/td>\r\n8<\/td>\r\n<\/tr>\r\n
13<\/td>\r\n89<\/td>\r\n84.92<\/td>\r\n30, 32, 35, 38, 40<\/td>\r\n35<\/td>\r\n10<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n114<\/td>\r\n109.97<\/td>\r\n32, 35, 38, 40, 42, 45<\/td>\r\n35<\/td>\r\n10<\/td>\r\n<\/tr>\r\n
21<\/td>\r\n139<\/td>\r\n135.64<\/td>\r\n35, 38, 40, 42, 45, 48<\/td>\r\n40<\/td>\r\n12<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

80B \u00a0|\u00a0 Pitch 25.40 mm \u00a0|\u00a0 Roller \u00d8 15.88 mm \u00a0|\u00a0 Inner width 15.88 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
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Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n84<\/td>\r\n77.52<\/td>\r\n44 (pilot)<\/td>\r\n42<\/td>\r\n12<\/td>\r\n<\/tr>\r\n
13<\/td>\r\n117<\/td>\r\n113.27<\/td>\r\n40, 42, 45, 48<\/td>\r\n42<\/td>\r\n12<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n151<\/td>\r\n146.28<\/td>\r\n42, 45, 48, 50<\/td>\r\n42<\/td>\r\n14<\/td>\r\n<\/tr>\r\n
21<\/td>\r\n186<\/td>\r\n180.75<\/td>\r\n45, 48, 50, 55<\/td>\r\n50<\/td>\r\n14<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

* = pilot bore (no keyway). Full bore range and stainless SUSFBP25B variants available \u2014 contact us. 50B, 100B and 120B also available. Specify chain size, tooth count, type (FBN or FBK) and bore diameter mm when ordering.<\/p>\r\n\r\n

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Technical Features<\/h2>\r\n\"Finished-Bore-Sprockets-1\"\r\n
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JIS B1801 Tooth Profile<\/h3>\r\n

The tooth profile conforms to JIS B1801 \u2014 required for correct engagement with Asian standard roller chain. The seating curve radius and tooth width differ from DIN 8187 and ANSI B29.1 because the Asian standard roller diameter is slightly different from both. Running Asian chain on European or American sprockets (or vice versa) causes incorrect roller seating and premature wear even where the pitch is identical. Pair with JIS B1801 Asian standard roller chain<\/a>.<\/p>\r\n\r\n<\/div>\r\n

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C45 with Hardened Teeth \u2014 35B and Above<\/h3>\r\n

All FBN and FBK sprockets in 35B through 120B are C45 carbon steel with induction-hardened tooth flanks at 52\u201358 HRC. The bore is machined before the heat treatment cycle and confirmed dimensionally after hardening. 25B sprockets are lighter duty \u2014 plain C45 without tooth hardening, suitable for the light loads in 25B drive applications. SUS304 stainless variants (SUSFBP prefix) are plain bore only and are unhardened by material.<\/p>\r\n\r\n<\/div>\r\n

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FBK Flange Type \u2014 Lateral Retention<\/h3>\r\n

The FBK type adds a flange face to the hub, providing a bearing face against a shaft shoulder or collar. This is required in applications where the sprocket must be retained axially on the shaft by its own geometry rather than relying entirely on the setscrew. FBK is the standard type for chain drives in Japanese agricultural machinery and material handling equipment where the sprocket position is located by a shaft step rather than by a setscrew alone.<\/p>\r\n\r\n<\/div>\r\n

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Korea Ever-Power for Asian OEM Drives<\/h3>\r\n

Korean industrial machinery uses JIS-based chain standards for all domestic drives. Korea Ever-Power Asian standard finished bore sprockets are the correct replacement for drives in Korean-manufactured equipment across all sectors \u2014 construction machinery, agricultural equipment, industrial conveyors and textile machinery. The same hub geometry, bore sizes and keyway dimensions as the original Korean OEM specification.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n

Matching Chain & Related Products<\/h2>\r\n
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Matching Asian Standard Roller Chain<\/p>\r\n

Match your FBN\/FBK sprocket with JIS B1801 Asian standard roller chain in the same chain number (35B, 40B, 60B, 80B etc.). Standard, H-series, self-lubricating and SUS304 stainless variants available. Never run European DIN 8187 or ANSI B29.1 chain on Asian sprockets.<\/p>\r\nView Driving Chains \u2192<\/a>\r\n\r\n<\/div>\r\n<\/div>\r\n

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Leaf Chains<\/a><\/h3>\r\n

BL and LH series leaf chains for forklift masts, industrial door drives, and hoist mechanisms. Tensile ratings from 11 kN to over 1,600 kN.<\/p>\r\nView Leaf Chains<\/a>\r\n\r\n<\/div>\r\n

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Engineering Chains<\/a><\/h3>\r\n

Welded steel, cast iron, and forged chains for heavy-duty industrial conveying in steel mills, cement plants, mining, and chemical processing.<\/p>\r\nView Engineering Chains<\/a>\r\n\r\n<\/div>\r\n

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Stainless Steel Chains<\/a><\/h3>\r\n

SUS304 and SUS316L roller chains for food, pharmaceutical, and chemical environments. Suitable for washdown, elevated temperature, and corrosive media.<\/p>\r\nView SS Chains<\/a>\r\n\r\n<\/div>\r\n

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Agricultural Chains<\/a><\/h3>\r\n

CA, CC, and corn-chain series for combine harvesters, cotton pickers, balers, and spreading equipment. ISO 487 \/ ASME B29.100 standard.<\/p>\r\nView Agricultural Chains<\/a>\r\n\r\n<\/div>\r\n<\/div>\r\n\r\n

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Request a Quote \u2014 Asian Standard Finished Bore Sprockets<\/h3>\r\n

Specify chain size (e.g. 60B), tooth count, type (FBN or FBK), bore diameter in mm. Stainless SUSFBP available for 25B. Response within one working day.<\/p>\r\n\r\n

Get a Quote Now<\/a>\r\nAll Sprocket Products<\/a><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>","_et_gb_content_width":""},"product_brand":[],"product_cat":[24],"product_tag":[],"class_list":["post-259","product","type-product","status-publish","has-post-thumbnail","product_cat-sprockets","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/product\/259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/comments?post=259"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/media\/236"}],"wp:attachment":[{"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/media?parent=259"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/product_brand?post=259"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/product_cat?post=259"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/5speedtransmission.com\/sv\/wp-json\/wp\/v2\/product_tag?post=259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}