{"id":2045,"date":"2026-04-08T05:51:09","date_gmt":"2026-04-08T05:51:09","guid":{"rendered":"https:\/\/drivensprockets.top\/product\/28b-metric-roller-chain-sprocket\/"},"modified":"2026-04-08T05:51:10","modified_gmt":"2026-04-08T05:51:10","slug":"28b-metric-roller-chain-sprocket","status":"publish","type":"product","link":"https:\/\/drivensprockets.top\/vi\/product\/28b-metric-roller-chain-sprocket\/","title":{"rendered":"28B Metric Roller Chain Sprocket"},"content":{"rendered":"
\n

28B Metric Roller Chain Sprocket \u2014 Maximum Load Heavy Industrial Drives<\/h2>\n

The 28B at 44.45mm (1-3\/4 inch) pitch is specified when the largest ISO metric chain loads are required. Used in dredging equipment, steel mill rolling drives, large-scale mining conveyors, and heavy port machinery. Available in simplex (28B-1) and duplex (28B-2) from 9 to 76 teeth. C45 or 4140 alloy steel.<\/p>\n

\"28B<\/p>\n

Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\n28B-1<\/th>\n28B-2<\/th>\n<\/tr>\n<\/thead>\n
Pitch<\/td>\n44.45 mm (1-3\/4″)<\/td>\n44.45 mm<\/td>\n<\/tr>\n
Roller Dia.<\/td>\n27.94 mm<\/td>\n27.94 mm<\/td>\n<\/tr>\n
Internal Width<\/td>\n30.99 mm<\/td>\n30.99 mm<\/td>\n<\/tr>\n
Teeth<\/td>\n9 – 76T<\/td>\n9 – 57T<\/td>\n<\/tr>\n
V\u1eadt li\u1ec7u<\/td>\nC45 \/ 4140<\/td>\nC45 \/ 4140<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Features<\/h2>\n

▶ Largest commonly specified ISO metric pitch \u2014 for applications beyond 24B capacity<\/p>\n

▶ 4140 alloy steel standard for mining \u2014 handles extreme shock and fatigue loading<\/p>\n

▶ Induction hardened HRC 40-50 \u2014 critical for abrasive heavy-industry environments<\/p>\n

▶ Split hub and segmental rim for field replacement on large-scale equipment<\/p>\n

▶ Bores up to 130mm+ with QD bushings on larger tooth counts<\/p>\n

▶ ISO 9001 certified, EN 10204 Type 3.1 material traceability<\/p>\n

Applications<\/h2>\n

🏭 Large mining overland conveyors, dredging chain drives, steel mill coil handling<\/p>\n

⚓ Heavy port ship-loaders, bulk terminal conveyor drives, quayside crane mechanisms<\/p>\n

Reviews<\/h2>\n
\n

“28B duplex on our dredger chain drive. Handles the shock loads from bucket filling without issues.” ★★★★★<\/p>\n

Marine Engineer, Darwin, Australia<\/p>\n<\/div>\n

\n

“Custom bore 28B-1 for our steel mill. 4140 steel with material cert. Excellent quality.” ★★★★★<\/p>\n

Rolling Mill Manager, Jamshedpur, India<\/p>\n<\/div>\n

\n

“Heavy-duty 28B for our port conveyor. Running well under salt-spray coastal conditions with zinc-nickel plating.” ★★★★☆<\/p>\n

Port Operations, Brisbane, Australia<\/p>\n<\/div>\n

\n

“Segmental rim 28B for our bucket elevator. Rim change during shutdown saved significant time.” ★★★★★<\/p>\n

Maintenance Superintendent, Antofagasta, Chile<\/p>\n<\/div>\n

\n

“Consistent heavy-duty sprocket supply from Ever-Power. Used across multiple sites.” ★★★★★<\/p>\n

Group Procurement, Perth, Australia<\/p>\n<\/div>\n

FAQ<\/h2>\n
\n28B vs ANSI #140?<\/summary>\n
Both 44.45mm pitch but different specifications. Not interchangeable.<\/div>\n<\/details>\n
\nIs triplex available?<\/summary>\n
28B is primarily available in simplex and duplex. Triplex can be manufactured on request for specific tooth counts.<\/div>\n<\/details>\n
\nMax bore?<\/summary>\n
Up to 130mm+ with QD bushings. Plain bore to ~110mm on larger tooth counts.<\/div>\n<\/details>\n
\nSurface treatment for marine?<\/summary>\n
Hot-dip galvanise or zinc-nickel. For submerged applications, SS316 stainless steel.<\/div>\n<\/details>\n
\nMOQ?<\/summary>\n
One piece with full material certification and dimensional inspection report.<\/div>\n<\/details>\n
\n
\"chain\"<\/p>\n

28B Chains<\/p>\n<\/div>\n

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

QD Bushings<\/p>\n<\/div>\n<\/div>\n

✅ ISO 9001:2015 ✅ ISO\/R 606 ✅ DIN 8187 ✅ EN 10204 Type 3.1<\/p>\n

Ever-Power Australia: 15+ years, 3,200+ SKUs, full CNC manufacturing, engineering support, OEM capability.<\/p>\n

\n

Request 28B Quote<\/h3>\n

Contact Us<\/a> All Sprockets<\/a><\/div>\n

About Us<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

28B metric roller chain sprocket at 44.45mm (1-3\/4 inch) pitch. Designed for the heaviest industrial chain drive applications including large mining conveyors, dredging equipment, and steel rolling mills. 4140 alloy steel or C45 with induction-hardened teeth. ISO\/R 606. Simplex and duplex.<\/p>","protected":false},"featured_media":1986,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[3007,3006],"product_tag":[3041,3042,3043,3044,3009],"class_list":{"0":"post-2045","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-iso-metric-bs-sprockets","7":"product_cat-sprockets","8":"product_tag-28b-sprocket","9":"product_tag-44-45mm-pitch-sprocket","10":"product_tag-iso-28b-sprocket","11":"product_tag-maximum-load-industrial-sprocket","12":"product_tag-metric-roller-chain-sprocket","14":"first","15":"instock","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/product\/2045","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/comments?post=2045"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/media\/1986"}],"wp:attachment":[{"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/media?parent=2045"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/product_brand?post=2045"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/product_cat?post=2045"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/drivensprockets.top\/vi\/wp-json\/wp\/v2\/product_tag?post=2045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}