For reliable conveyor and machinery setups, choosing the right idler sprocket is essential. This guide highlights five well-matched options for ANSI #40, #50, #60, and #80 roller chains, focusing on durability, wear resistance, and corrosion protection. Each pick features hardened teeth, reinforced bearings, and corrosion-resistant finishes tailored to common industrial applications.
| Product | Brand | Tooth Count | ||
|---|---|---|---|---|
| 40BB17-1/2 | Saelno | 17 | 1/2″ | 1/2″ |
| 40, B Type 17T | Jeremywell | 17 | 1/2″ | 1/2″ |
| 40 14T Two-Pack | uxcell | 14 | 12mm | 1/2″ |
| 35T 15T Sprocket | uxcell | 15 | 10mm | 3/8″ |
| 60BB15-5/8 | Saelno | 15 | 5/8″ | 3/4″ |
40BB17-1/2 Idler Sprocket by Saelno
The #40 ANSI, 1/2 inch pitch, and 1/2 inch bore configuration features 17 teeth with Type C alignment. Constructed from ANSI 1045 carbon steel, the teeth receive high-frequency quenching to HRC 38-42, enhancing wear resistance. The surface is blackened for corrosion resistance and rust-proof performance, making it suitable for environments with moisture exposure.
40 17T Idler Sprocket, Jeremywell
Jeremywell’s 40 ANSI/1/2″ bore version provides 17 teeth with a hardened engagement surface (HRC 40-50). The hub diameter is specified at 2.126 inches, and the B Type design emphasizes durable, stable alignment for fixed-fixed mounting on shafts, delivering reliable torque transfer in compact drives.
uxcell 40T Double Bearing Idler Sprocket
uxcell offers a two-pack ANSI #40 / DIN(ISO)08A roller chain idler sprocket with a 12mm bore and 14 teeth. It uses two precision bearings (6201Z) for smooth rotation and a high-hardness C45 steel construction with teeth hardened through quenching. This design supports long service life and reduced friction in fixed mounting configurations.
uxcell 35T Idler Sprocket 15 Tooth
This 15-tooth, 3/8″ pitch idler supports ISO 06C chain and features a 10mm bore. The two-piece set is crafted from C45 carbon steel with teeth hardened for improved wear resistance and long service life. A sealed bearing configuration enables smooth rotation even under higher loads.
60BB15-5/8 Idler Sprocket by Saelno
Designed for ANSI #60 chains, this 15-tooth idler uses a 5/8 inch bore and 3/4 inch pitch. Constructed from ANSI 1045 carbon steel, with hardened teeth (HRC 38-42) and a blackened surface finish, it offers corrosion resistance and rust protection while maintaining reliable performance in tougher industrial machines.
#50 Idler Sprocket Type C
The #50 idler features a 5/8 inch pitch with a 1/2 inch bore and 15 teeth in Type C configuration. Made from ANSI 1045 carbon steel, teeth are hardened with high-frequency quenching to achieve HRC 38-42. The sprocket surface is blackened for corrosion resistance and rust-proof performance, suitable for fixed mount installations on #50 chain drives.
Buying Guide
- Compatibility: Verify chain size (ANSI #40, #50, #60, #80) and bore diameter to ensure a proper fit with your drive shaft and mounting hardware.
- Tooth count and pitch: More teeth increases contact area and life under load; match the pitch of your chain to maintain smooth operation.
- Material and hardness: Carbon steel with hardened teeth (HRC 38-50 range) provides durability in challenging environments. Consider corrosion resistance if exposure to moisture is expected.
- Bearings: Idler sprockets with integrated bearings (e.g., two bearings or sealed bearings) reduce friction and improve rotation stability, especially at higher speeds and loads.
- Finish and corrosion protection: A blackened surface or other protective finishes extend life in humid or oily environments.
- Mounting configuration: Type C and B distinctions influence how the sprocket aligns with the chain and fixed shafts; ensure your setup tolerances accommodate the chosen type.
- Quantity and installation: If multiple idlers are required, consider purchasing in pairs or sets to maintain consistent wear characteristics across the drive.
- Maintenance: Check for tooth wear, bearing play, and any loosening on shafts. Replacing worn sprockets promptly reduces chain wear and downtime.