Description
32B Metric Roller Chain Sprocket — The Largest Standard ISO Metric Sprocket
The 32B at 50.8mm (2 inch) pitch is the largest standard ISO metric roller chain sprocket. Reserved for the most extreme industrial applications where no other single pitch can deliver the required load capacity. Used in large-scale dredging, heavy mining overland conveyors, and steel mill primary drives. Available primarily in simplex (32B-1) from 9 to 57 teeth. 4140 alloy steel is standard for this pitch.
Specifications
| Parameter | 32B-1 |
|---|---|
| Pitch | 50.8 mm (2″) |
| Roller Diameter | 29.21 mm |
| Internal Width | 30.99 mm |
| Tooth Count | 9 – 57T |
| Material | 4140 Alloy Steel (standard) / C45 |
Features
◆ Maximum available ISO metric pitch — no larger standard size exists
◆ 4140 alloy steel as standard — 655-900 MPa for extreme shock and fatigue
◆ HRC 40-50 induction hardened teeth — maximum abrasion resistance
◆ Split hub and segmental rim for field maintenance on largest equipment
◆ QD bushed versions for bores up to 150mm+
◆ Full EN 10204 Type 3.1 traceability, ISO 9001:2015 certified
Applications
Large-scale dredging equipment, heavy mining overland conveyors exceeding 2km, steel mill primary rolling drives, and port bulk terminal main conveyor drives. Specified where the application requires the absolute maximum single-chain torque available in the ISO metric standard.
Reviews
“32B simplex on our main dredger chain. Custom 4140 with full material cert. Performing perfectly under extreme cyclic loading.” ★★★★★
Dredging Engineer, Townsville, Australia
“The largest sprocket in our fleet. Ever-Power machined a custom bore to our exact shaft spec. Fit first time.” ★★★★★
Heavy Equipment Manager, Kalgoorlie, Australia
“32B for our steel mill coil line. Heavy-gauge teeth are robust. No premature wear after 8 months.” ★★★★☆
Rolling Mill Superintendent, Rizhao, China
“Segmental rim 32B replaced during our annual shutdown. Reduced sprocket change time by 50%.” ★★★★★
Maintenance Planner, BHP site, Australia
“Professional documentation with every order. Material certs, inspection reports, everything we need for audits.” ★★★★★
Quality Manager, Rio Tinto site, Australia
FAQ
32B vs ANSI #160?
Duplex available?
What material is standard?
Max bore?
MOQ?
32B Chains
QD Bushings
✅ ISO 9001:2015 ✅ ISO/R 606 ✅ DIN 8187 ✅ EN 10204 Type 3.1
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