{"id":230,"date":"2026-07-27T08:57:31","date_gmt":"2026-07-27T08:57:31","guid":{"rendered":"https:\/\/5speedtransmission.com\/?post_type=product&p=230"},"modified":"2026-07-27T08:57:31","modified_gmt":"2026-07-27T08:57:31","slug":"cast-iron-sprockets","status":"publish","type":"product","link":"https:\/\/5speedtransmission.com\/cs\/produkt\/cast-iron-sprockets\/","title":{"rendered":"Litinov\u00e1 ozuben\u00e1 kola Evropsk\u00e1 norma | GG22-GG25 DIN 8187 Velk\u00fd pr\u016fm\u011br"},"content":{"rendered":"
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06B \u2013 24B<\/p>\n

Rozsah velikost\u00ed \u0159et\u011bzu<\/p>\n<\/div>\n

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Z=30 \u2013 150<\/p>\n

Tooth Count Range<\/p>\n<\/div>\n

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GG22 \u2013 GG25<\/p>\n

Grey Cast Iron Grade<\/p>\n<\/div>\n

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ISO 9001<\/p>\n

Certifikovan\u00e1 kvalita<\/p>\n<\/div>\n<\/div>\n

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Cast Iron Sprockets \u2013 Product Overview<\/h2>\n
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Korea Ever-Power cast iron sprockets cover the large-diameter, high tooth count end of the European standard sprocket range \u2014 chain sizes 06B through 24B, tooth counts Z=30 to Z=150, in simplex, duplex and triplex configurations to DIN 8187 \/ ISO R606. These are the correct choice for slow-speed, heavy-load industrial drives where large pitch circle diameters are required and where the operating environment makes carbon steel sprockets unsuitable or uneconomical.<\/p>\n

The material is grey cast iron to grade GG22\u2013GG25 (EN-GJL-220 to EN-GJL-250). Grey cast iron has a lamellar graphite microstructure that gives it properties quite different from carbon steel: the graphite lamellae act as an internal solid lubricant at the tooth contact surface, providing inherent wear resistance without external hardening. This is particularly valuable in dusty, abrasive or poorly lubricated environments where a ground-smooth carbon steel tooth flank would be rapidly abraded, but the cast iron surface \u2014 slightly porous and graphite-rich \u2014 retains a lubrication film and resists micro-abrasion far better.<\/p>\n

All cast iron sprockets are surface phosphated after casting and machining. Phosphating converts the outer surface layer to iron phosphate \u2014 a tightly adherent, oil-retaining conversion coating that provides a degree of corrosion protection and lubricant retention on the tooth flanks and bore surfaces. It does not add dimensional build-up (typically 1\u20135 \u00b5m thickness) and does not require any correction to bore tolerances after treatment.<\/p>\n

Cast iron sprockets are stock bore as standard \u2014 bore machined to your shaft diameter on order. All sizes up to 12B are also available from our taper bore European range<\/a> in cast iron (-CI suffix). For the small-tooth-count carbon steel equivalent covering Z=8 to Z=57, see our European standard stock bore sprockets<\/a>. Pair with European standard roller chain in DIN 8187<\/a> for a matched, factory-direct drive.<\/p>\n<\/div>\n

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\u2699\ufe0f Cast iron is the right choice when:<\/p>\n