Description
Stainless Steel Sprockets
SUS50B
Medium-duty No.50 chain stainless steel sprockets in 10T–40T. Engineered as a direct replacement for Tsubaki 50SS, Iwis, and Rexnord No.50 sprocket components.
Product Overview
The SUS50B targets No.50 chain drives where load requirements step beyond what the 40-series can handle while still demanding the corrosion resistance of stainless steel. At a 15.875 mm pitch, No.50 chain is a recognised step-up in power transmission capacity, commonly found in medium-duty conveyor systems, packaging machinery main drives, and agricultural equipment requiring reliable operation in wet or chemically active environments.
Ever-Power machines SUS50B sprockets from certified SUS304 billets using CNC hobbing equipment calibrated for ANSI B29.1 No.50 tooth profiles. The full range runs from 10T to 40T, providing a wide selection of drive ratios from a single supplier. All sizes can be supplied with stock bore for immediate use or with custom-finished bores, keyways, and hub modifications to suit your shaft arrangement.
Dimensional Specifications — SUS50B
Complete specification table for all 26 available tooth counts. Outside diameter (Do), pitch diameter (Dp), bore limits, hub dimensions (BD/BL), and weight are listed for reference. All units in mm.
| Chain: No.50SS | Pitch (P): 15.875 mm | Int. Width (W): 9.53 mm | Roller Dia. (Dr): 10.16 mm | Teeth Width (T): 8.7 mm | ||||||||
|---|---|---|---|---|---|---|---|---|
| Teeth No. | Outside Dia. Do (mm) | Pitch Dia. Dp (mm) | Bore Stock (mm) | Bore Min (mm) | Bore Max (mm) | Hub BD (mm) | Hub BL (mm) | Weight (kg) |
| 10 | 58 | 51.37 | 9 | 11 | 22 | *40 | 25 | 0.27 |
| 11 | 64 | 56.35 | 14.5 | 16.5 | 28 | *45.5 | 25 | 0.33 |
| 12 | 69 | 61.34 | 14.5 | 16.5 | 30 | *50 | 25 | 0.41 |
| 13 | 74 | 66.34 | 14.5 | 16.5 | 32 | *51 | 25 | 0.46 |
| 14 | 79 | 71.34 | 14.5 | 16.5 | 32 | 52 | 25 | 0.52 |
| 15 | 84 | 76.35 | 14.5 | 16.5 | 35 | 57 | 25 | 0.62 |
| 16 | 89 | 81.37 | 14.5 | 16.5 | 40 | 62 | 25 | 0.72 |
| 17 | 94 | 86.39 | 14.5 | 16.5 | 45 | 67 | 25 | 0.83 |
| 18 | 100 | 91.42 | 14.5 | 16.5 | 48 | 72 | 28 | 1.0 |
| 19 | 105 | 96.45 | 14.5 | 16.5 | 48 | 73 | 28 | 1.1 |
| 20 | 110 | 101.48 | 14.5 | 16.5 | 48 | 73 | 28 | 1.2 |
| 21 | 115 | 106.51 | 14.5 | 16.5 | 48 | 73 | 28 | 1.2 |
| 22 | 120 | 111.55 | 16.5 | 18.5 | 48 | 73 | 28 | 1.3 |
| 23 | 125 | 116.58 | 16.5 | 18.5 | 48 | 73 | 28 | 1.3 |
| 24 | 130 | 121.62 | 16.5 | 18.5 | 48 | 73 | 28 | 1.4 |
| 25 | 135 | 126.66 | 16.5 | 18.5 | 48 | 73 | 28 | 1.5 |
| 26 | 140 | 131.7 | 16.5 | 18.5 | 48 | 73 | 28 | 1.5 |
| 27 | 145 | 136.74 | 16.5 | 18.5 | 48 | 73 | 28 | 1.5 |
| 28 | 150 | 141.79 | 16.5 | 18.5 | 48 | 73 | 28 | 1.6 |
| 30 | 161 | 151.87 | 16.5 | 18.5 | 48 | 73 | 28 | 1.8 |
| 32 | 171 | 161.96 | 16.5 | 18.5 | 48 | 73 | 28 | 1.9 |
| 34 | 181 | 172.05 | 16.5 | 18.5 | 48 | 73 | 28 | 2.1 |
| 35 | 186 | 177.1 | 16.5 | 18.5 | 48 | 73 | 28 | 2.2 |
| 36 | 191 | 182.14 | 16.5 | 18.5 | 55 | 83 | 35 | 2.85 |
| 38 | 201 | 192.24 | 16.5 | 18.5 | 55 | 83 | 35 | 3.05 |
| 40 | 211 | 202.33 | 22 | 24 | 55 | 83 | 35 | 3.25 |
Technical Features
Tooth geometry matches ANSI No.50 specification exactly — ensuring drop-in compatibility with Tsubaki, Iwis, and Rexnord 50-series chain.
SUS304 body with passivated surface withstands high-pressure wash-down, CIP chemicals, and condensation cycles without surface degradation.
10T through 40T covers the majority of medium-duty No.50 drive ratio requirements from a single part family and single supplier.
Hub bore ranges from 9 mm (10T) to 24 mm (40T) in stock form. Custom reboring available up to maximum bore limits shown in the specification table.
SUS304 retains mechanical properties from −40 °C to +300 °C, making SUS50B suitable for both refrigerated food processing and heated industrial environments.
Single-piece samples for engineering approval; volume orders with standard pricing breaks at 50, 100, 250, and 500 pcs/size.
Industry Applications
Related Components Available from Ever-Power
SUS304 simplex roller chain at 15.875 mm pitch. Available in standard rolls and cut-to-length for direct pairing with SUS50B sprockets.
Stainless connecting links in spring-clip and rivet styles. Packs of 5, 10, or 50 for maintenance and commissioning stock.
Submit your shaft drawing — Ever-Power machines bore, keyway, and set-screw on any SUS50B from stock. 5–8 day turnaround.
Export-grade VCI (vapour-phase corrosion inhibitor) inner wrap available for long-distance ocean freight. No extra charge on orders above 100 pcs.
Customer Reviews
“SUS50B 18T replaced our original Tsubaki 50SS sprockets on a seafood conveyor. Identical fit, equal quality, and 25% cost saving. Very satisfied with the Ever-Power product.”
“Custom bore 30mm with 8mm keyway delivered in 9 days. Very precise machining — the sprocket seated perfectly on the shaft without any adjustment. Highly recommended for OEM procurement.”
“Good stainless quality and fast response from the sales team. Used SUS50B 22T on a water treatment plant drive — holding up well in humid conditions after 8 months of operation.”
Share your chain type, tooth count, bore size, and quantity. Our engineers will reply with pricing and lead time the same business day.
📍 SHENHUA ROAD, HANGZHOU, CHINA · 📞 +86-571-88220653
