{"id":261,"date":"2026-07-31T07:21:28","date_gmt":"2026-07-31T07:21:28","guid":{"rendered":"https:\/\/5speedtransmission.com\/?post_type=product&p=261"},"modified":"2026-07-31T07:21:28","modified_gmt":"2026-07-31T07:21:28","slug":"double-pitch-sprockets-asian-standard","status":"publish","type":"product","link":"https:\/\/5speedtransmission.com\/th\/product\/double-pitch-sprockets-asian-standard\/","title":{"rendered":"Double Pitch Sprockets Asian Standard"},"content":{"rendered":"
\n

<\/p>\n

\n
\n

NK2040 \u2013 NK2120<\/p>\n

Chain Series<\/p>\n<\/div>\n

\n

SB & RB<\/p>\n

Standard & Large Roller<\/p>\n<\/div>\n

\n

Solid & Weld<\/p>\n

Hub Type<\/p>\n<\/div>\n

\n

JIS B1801<\/p>\n

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

<\/p>\n

Asian Standard Double Pitch Sprockets \u2013 Product Overview<\/h2>\n
\n
\n

A key distinction from the American double pitch range: Asian double pitch chain is produced in two roller types \u2014 SB (Standard Bore \/ Standard Roller)<\/strong> where every link has a roller of the standard JIS diameter, and RB (Roller Bore \/ Large Roller)<\/strong> where every link has a larger carrier roller machined to a larger diameter for improved load distribution on the chain guide and sprocket. SB and RB chains are NOT interchangeable \u2014 the tooth seating curve and sprocket tooth width differ between the two roller types. Always confirm which roller type your chain uses before ordering a replacement sprocket.<\/p>\n

The hub is available in two forms: Solid hub<\/strong> \u2014 a conventional hub with a bore, machined from a single piece; and Weld hub<\/strong> \u2014 a fabricated assembly where the tooth ring is welded onto a separate hub, used for very large diameter sprockets where a solid casting would be uneconomical. Solid hubs are standard for most sizes; weld hub is specified for larger tooth counts where the tip diameter exceeds the economical casting size.<\/p>\n

\n<\/div>\n

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

\ud83d\udd0d SB vs RB \u2014 How to identify your chain<\/p>\n

Check the chain link plate markings or measure the roller diameter:<\/p>\n\n\n\n\n\n\n
Chain<\/th>\nSB Roller \u00d8<\/th>\nRB Roller \u00d8<\/th>\n<\/tr>\n
NK2040<\/td>\n7.92 \u0e21\u0e21.<\/td>\n15.88 mm<\/td>\n<\/tr>\n
NK2060<\/td>\n11.91 mm<\/td>\n22.23 mm<\/td>\n<\/tr>\n
NK2080<\/td>\n15.88 mm<\/td>\n28.58 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u26a0\ufe0f RB roller is always approximately 2\u00d7 the SB roller diameter \u2014 if in doubt, measure and compare to this table before ordering sprocket.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Key:<\/strong> Z = teeth \u00a0|\u00a0 Do = tip diameter (mm) \u00a0|\u00a0 Dp = pitch circle diameter (mm) \u00a0|\u00a0 BD stock = pilot bore (mm) \u00a0|\u00a0 BD max = max bore (mm) \u00a0|\u00a0 BL = hub length (mm) \u00a0|\u00a0 SB = standard roller, RB = large roller \u00a0|\u00a0 * = with groove for chain clearance<\/p>\n<\/div>\n

Double Pitch Sprocket Specifications<\/h2>\n

NK2040 \u00a0|\u00a0 Pitch 25.40 mm \u00a0|\u00a0 SB Roller 7.92 mm \/ RB Roller 15.88 mm<\/h3>\n
\n\n\n\n\n\n\n\n\n
\u0e0b<\/th>\nDo (mm)<\/th>\nDp (mm)<\/th>\nBD stock (mm)<\/th>\nBD max (mm)<\/th>\nBL (mm)<\/th>\n\u0e1e\u0e34\u0e21\u0e1e\u0e4c<\/th>\n<\/tr>\n<\/thead>\n
7<\/td>\n65<\/td>\n57.54<\/td>\n16<\/td>\n*40<\/td>\n25<\/td>\nSB\/RB Solid<\/td>\n<\/tr>\n
10<\/td>\n93<\/td>\n82.20<\/td>\n16<\/td>\n63<\/td>\n25<\/td>\nSB\/RB Solid<\/td>\n<\/tr>\n
14<\/td>\n127<\/td>\n114.45<\/td>\n16<\/td>\n63<\/td>\n25<\/td>\nSB\/RB Solid<\/td>\n<\/tr>\n
16<\/td>\n143<\/td>\n130.20<\/td>\n20<\/td>\n68<\/td>\n28<\/td>\nSB\/RB Solid<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

NK2080 \u00a0|\u00a0 Pitch 50.80 mm \u00a0|\u00a0 SB Roller 15.88 mm \/ RB Roller 28.58 mm<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
\u0e0b<\/th>\nDo (mm)<\/th>\nDp (mm)<\/th>\nBD stock (mm)<\/th>\nBD max (mm)<\/th>\nBL (mm)<\/th>\n\u0e1e\u0e34\u0e21\u0e1e\u0e4c<\/th>\n<\/tr>\n<\/thead>\n
6\u00bd<\/td>\n118<\/td>\n109.31<\/td>\n16<\/td>\n70<\/td>\n40<\/td>\nSB Solid<\/td>\n<\/tr>\n
7<\/td>\n136<\/td>\n117.08<\/td>\n20<\/td>\n76<\/td>\n40<\/td>\nRB Solid<\/td>\n<\/tr>\n
8\u00bd<\/td>\n151<\/td>\n140.63<\/td>\n20<\/td>\n93<\/td>\n40<\/td>\nSB Solid \/ Weld<\/td>\n<\/tr>\n
11\u00bd<\/td>\n200<\/td>\n188.29<\/td>\n26<\/td>\n107<\/td>\n45<\/td>\nSB Solid \/ Weld<\/td>\n<\/tr>\n
12\u00bd<\/td>\n216<\/td>\n204.27<\/td>\n26<\/td>\n107<\/td>\n45<\/td>\nSB Solid \/ Weld<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

NK2060 and NK2100 available \u2014 contact us. Half-tooth counts (6\u00bd, 8\u00bd etc.) indicate that the chain engages alternate teeth \u2014 normal for RB type. Specify: chain number (e.g. NK2080), tooth count, type (SB or RB), hub (Solid or Weld) and bore diameter mm.<\/p>\n

<\/p>\n

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

Features & Applications<\/h2>\n
\n
\n

Half-Tooth Count for RB Type<\/h3>\n

RB double pitch sprockets are listed with half-tooth counts (6\u00bd, 7\u00bd, 8\u00bd) because only alternate teeth engage the large rollers of the RB chain \u2014 the remaining teeth pass through the plain-pin spaces between rollers. A “6\u00bd tooth” RB sprocket engages 6 rollers and 7 plain pins per revolution. This gives smooth motion with fewer engagement impacts than a same-size SB sprocket where all teeth engage rollers.<\/p>\n<\/div>\n

\n

Weld Hub for Large Diameters<\/h3>\n

For NK2080 and NK2100 at large tooth counts (Do above 150 mm), the weld hub construction is used where the tooth ring is plasma-cut from steel plate and welded onto a separate machined hub. This reduces both material waste and machining time compared to a solid casting of the same size. The weld hub is dimensionally equivalent to the solid hub and uses the same bore and keyway specification.<\/p>\n<\/div>\n

\n

Conveyor Economy Application<\/h3>\n

Double pitch sprockets and chain are the standard specification for slow Japanese and Korean-manufactured slat conveyors, overhead trolley conveyors and pallet accumulation systems. NK2040 at Z=10 provides a 250 mm pitch circle diameter \u2014 equivalent to a standard NK40B Z=20 sprocket \u2014 at significantly lower chain cost per metre. For conveyor speeds below 0.5 m\/s and light loads below 200 kg total chain pull, NK2040 chain and sprockets are the most cost-effective drive solution. Match with JIS double pitch conveyor chain<\/a>.<\/p>\n<\/div>\n

\n

JIS B1801 Tooth Profile<\/h3>\n

Both SB and RB tooth profiles conform to JIS B1801 for the respective roller diameter. The SB sprocket tooth is machined for the standard roller diameter; the RB sprocket tooth is machined for the larger carrier roller. The two profiles are not interchangeable \u2014 always confirm the chain roller type (SB or RB) from the chain link plate marking before ordering a replacement sprocket.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\u0e42\u0e0b\u0e48\u0e17\u0e35\u0e48\u0e40\u0e02\u0e49\u0e32\u0e0a\u0e38\u0e14\u0e01\u0e31\u0e19\u0e41\u0e25\u0e30\u0e1c\u0e25\u0e34\u0e15\u0e20\u0e31\u0e13\u0e11\u0e4c\u0e17\u0e35\u0e48\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e02\u0e49\u0e2d\u0e07<\/h2>\n
\"JIS<\/p>\n
\n

Matching Asian Double Pitch Chain<\/p>\n

Match NK2040\/2060\/2080 sprockets with JIS B1801 double pitch chain in SB or RB type. K-attachment variants available for slat and overhead trolley conveyors. Never run standard pitch 40B\/60B\/80B chain on double pitch sprockets.<\/p>\n

View Conveyor Chains \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\n

\"\u0e42\u0e0b\u0e48\u0e43\u0e1a\u0e44\u0e21\u0e49<\/p>\n

\u0e42\u0e0b\u0e48\u0e43\u0e1a\u0e44\u0e21\u0e49<\/a><\/h3>\n

\u0e42\u0e0b\u0e48\u0e43\u0e1a\u0e21\u0e35\u0e14\u0e0b\u0e35\u0e23\u0e35\u0e2a\u0e4c BL \u0e41\u0e25\u0e30 LH \u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e40\u0e2a\u0e32\u0e02\u0e2d\u0e07\u0e23\u0e16\u0e22\u0e01 \u0e23\u0e30\u0e1a\u0e1a\u0e02\u0e31\u0e1a\u0e40\u0e04\u0e25\u0e37\u0e48\u0e2d\u0e19\u0e1b\u0e23\u0e30\u0e15\u0e39\u0e2d\u0e38\u0e15\u0e2a\u0e32\u0e2b\u0e01\u0e23\u0e23\u0e21 \u0e41\u0e25\u0e30\u0e01\u0e25\u0e44\u0e01\u0e22\u0e01 \u0e21\u0e35\u0e1e\u0e34\u0e01\u0e31\u0e14\u0e23\u0e31\u0e1a\u0e41\u0e23\u0e07\u0e14\u0e36\u0e07\u0e15\u0e31\u0e49\u0e07\u0e41\u0e15\u0e48 11 kN \u0e16\u0e36\u0e07\u0e21\u0e32\u0e01\u0e01\u0e27\u0e48\u0e32 1,600 kN<\/p>\n

\u0e14\u0e39\u0e42\u0e0b\u0e48\u0e43\u0e1a\u0e44\u0e21\u0e49<\/a><\/p>\n<\/div>\n

\n

\"\u0e42\u0e0b\u0e48\u0e25\u0e33\u0e40\u0e25\u0e35\u0e22\u0e07\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e07\u0e32\u0e19\u0e2b\u0e19\u0e31\u0e01\u0e08\u0e32\u0e01\u0e1a\u0e23\u0e34\u0e29\u0e31\u0e17<\/p>\n

\u0e42\u0e0b\u0e48\u0e17\u0e32\u0e07\u0e27\u0e34\u0e28\u0e27\u0e01\u0e23\u0e23\u0e21<\/a><\/h3>\n

\u0e42\u0e0b\u0e48\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e40\u0e0a\u0e37\u0e48\u0e2d\u0e21 \u0e40\u0e2b\u0e25\u0e47\u0e01\u0e2b\u0e25\u0e48\u0e2d \u0e41\u0e25\u0e30\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e14\u0e31\u0e14 \u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e07\u0e32\u0e19\u0e25\u0e33\u0e40\u0e25\u0e35\u0e22\u0e07\u0e2b\u0e19\u0e31\u0e01\u0e43\u0e19\u0e2d\u0e38\u0e15\u0e2a\u0e32\u0e2b\u0e01\u0e23\u0e23\u0e21\u0e15\u0e48\u0e32\u0e07\u0e46 \u0e40\u0e0a\u0e48\u0e19 \u0e42\u0e23\u0e07\u0e07\u0e32\u0e19\u0e40\u0e2b\u0e25\u0e47\u0e01 \u0e42\u0e23\u0e07\u0e07\u0e32\u0e19\u0e1b\u0e39\u0e19\u0e0b\u0e35\u0e40\u0e21\u0e19\u0e15\u0e4c \u0e40\u0e2b\u0e21\u0e37\u0e2d\u0e07\u0e41\u0e23\u0e48 \u0e41\u0e25\u0e30\u0e42\u0e23\u0e07\u0e07\u0e32\u0e19\u0e41\u0e1b\u0e23\u0e23\u0e39\u0e1b\u0e2a\u0e32\u0e23\u0e40\u0e04\u0e21\u0e35<\/p>\n

\u0e14\u0e39\u0e2b\u0e48\u0e27\u0e07\u0e42\u0e0b\u0e48\u0e01\u0e32\u0e23\u0e1c\u0e25\u0e34\u0e15\u0e17\u0e32\u0e07\u0e27\u0e34\u0e28\u0e27\u0e01\u0e23\u0e23\u0e21<\/a><\/p>\n<\/div>\n

\n

\"\u0e42\u0e0b\u0e48\u0e25\u0e39\u0e01\u0e01\u0e25\u0e34\u0e49\u0e07\u0e2a\u0e41\u0e15\u0e19\u0e40\u0e25\u0e2a<\/p>\n

\u0e42\u0e0b\u0e48\u0e2a\u0e41\u0e15\u0e19\u0e40\u0e25\u0e2a<\/a><\/h3>\n

\u0e42\u0e0b\u0e48\u0e25\u0e39\u0e01\u0e01\u0e25\u0e34\u0e49\u0e07 SUS304 \u0e41\u0e25\u0e30 SUS316L \u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e07\u0e32\u0e19\u0e14\u0e49\u0e32\u0e19\u0e2d\u0e32\u0e2b\u0e32\u0e23 \u0e22\u0e32 \u0e41\u0e25\u0e30\u0e40\u0e04\u0e21\u0e35\u0e20\u0e31\u0e13\u0e11\u0e4c \u0e40\u0e2b\u0e21\u0e32\u0e30\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e25\u0e49\u0e32\u0e07\u0e17\u0e33\u0e04\u0e27\u0e32\u0e21\u0e2a\u0e30\u0e2d\u0e32\u0e14 \u0e2d\u0e38\u0e13\u0e2b\u0e20\u0e39\u0e21\u0e34\u0e2a\u0e39\u0e07 \u0e41\u0e25\u0e30\u0e2a\u0e32\u0e23\u0e01\u0e31\u0e14\u0e01\u0e23\u0e48\u0e2d\u0e19<\/p>\n

\u0e14\u0e39\u0e42\u0e0b\u0e48 SS<\/a><\/p>\n<\/div>\n

\n

\"\u0e2b\u0e48\u0e27\u0e07\u0e42\u0e0b\u0e48\u0e40\u0e01\u0e29\u0e15\u0e23\u0e01\u0e23\u0e23\u0e21-1\"<\/p>\n

\u0e2b\u0e48\u0e27\u0e07\u0e42\u0e0b\u0e48\u0e40\u0e01\u0e29\u0e15\u0e23\u0e01\u0e23\u0e23\u0e21<\/a><\/h3>\n

\u0e42\u0e0b\u0e48\u0e25\u0e33\u0e40\u0e25\u0e35\u0e22\u0e07\u0e41\u0e1a\u0e1a CA, CC \u0e41\u0e25\u0e30\u0e42\u0e0b\u0e48\u0e25\u0e33\u0e40\u0e25\u0e35\u0e22\u0e07\u0e02\u0e49\u0e32\u0e27\u0e42\u0e1e\u0e14 \u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e40\u0e01\u0e47\u0e1a\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e02\u0e49\u0e32\u0e27\u0e42\u0e1e\u0e14 \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e40\u0e01\u0e47\u0e1a\u0e1d\u0e49\u0e32\u0e22 \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e2d\u0e31\u0e14\u0e1f\u0e32\u0e07 \u0e41\u0e25\u0e30\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e01\u0e23\u0e30\u0e08\u0e32\u0e22\u0e1f\u0e32\u0e07 \u0e21\u0e32\u0e15\u0e23\u0e10\u0e32\u0e19 ISO 487 \/ ASME B29.100<\/p>\n

\u0e14\u0e39\u0e2b\u0e48\u0e27\u0e07\u0e42\u0e0b\u0e48\u0e01\u0e32\u0e23\u0e1c\u0e25\u0e34\u0e15\u0e17\u0e32\u0e07\u0e01\u0e32\u0e23\u0e40\u0e01\u0e29\u0e15\u0e23<\/a><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

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

Request a Quote \u2014 Asian Double Pitch Sprockets<\/h3>\n

Specify chain number (e.g. NK2080), tooth count, type (SB or RB), hub (Solid or Weld) and bore diameter mm. Response within one working day.<\/p>\n

\u0e02\u0e2d\u0e43\u0e1a\u0e40\u0e2a\u0e19\u0e2d\u0e23\u0e32\u0e04\u0e32\u0e15\u0e2d\u0e19\u0e19\u0e35\u0e49<\/a>
\n\u0e1c\u0e25\u0e34\u0e15\u0e20\u0e31\u0e13\u0e11\u0e4c\u0e40\u0e1f\u0e37\u0e2d\u0e07\u0e17\u0e31\u0e49\u0e07\u0e2b\u0e21\u0e14<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Korea Ever-Power Asian standard double pitch sprockets cover the JIS B1801 double pitch range \u2014 chain numbers NK2040 through NK2120, with each number representing double the pitch of the equivalent standard chain (NK2040 = double pitch of 40B = 25.4 mm pitch). As in the American double pitch system, the Asian double pitch sprocket exists to provide a larger pitch circle diameter for a given tooth count at lower chain and sprocket cost for slow-speed, light-load conveyors.<\/p>","protected":false},"featured_media":239,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[24],"product_tag":[],"class_list":["post-261","product","type-product","status-publish","has-post-thumbnail","product_cat-sprockets","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/product\/261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/comments?post=261"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/media\/239"}],"wp:attachment":[{"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/media?parent=261"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/product_brand?post=261"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/product_cat?post=261"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/5speedtransmission.com\/th\/wp-json\/wp\/v2\/product_tag?post=261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}