![[Tsubaki] — BS65 Series Backstop Cam Clutch (Conveyor, Medium (BS65~85))](https://img.prosourcemro.com/2026/05/001-305-1024x1024.png)
Cam Clutches
TSUBAKI
[Tsubaki] — BS65 Series Backstop Cam Clutch (Conveyor, Medium (BS65~85))
Family ID: TSB-BS65
Tsubaki Cam Clutch BS Series — backstop clutch exclusively for conveyor reverse-rotation prevention (low-speed use). BS-HS Series also available with improved maximum free-running speed and allowable torque. Torque range: 94~980,000 N·m (30~100,000 kgf·m). Keyway type: J = new JIS standard / E = old JIS type 2. Torque arm (TA) and safety cover (SC) available as accessories.
6 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| BS65-40J | BS65 — Bore Ø40 mm (J-type keyway) | Tsubaki | Series: BS65 | Type: Backstop Cam Clutch — Conveyor Reverse Prevention | Torque Range: 94~980,000 N·m (30~100,000 kgf·m) | Speed: Low-speed use | Keyway: J = New JIS Standard / E = Old JIS Type 2 | BS-HS Series: Enhanced free-running speed and torque available on request | Application: Conveyor backstop, incline conveyor reverse-rotation prevention | Bore: Ø40 mm | Keyway: J (New JIS Standard) | ||
| BS65-45J | BS65 — Bore Ø45 mm (J-type keyway) | Tsubaki | Series: BS65 | Type: Backstop Cam Clutch — Conveyor Reverse Prevention | Torque Range: 94~980,000 N·m (30~100,000 kgf·m) | Speed: Low-speed use | Keyway: J = New JIS Standard / E = Old JIS Type 2 | BS-HS Series: Enhanced free-running speed and torque available on request | Application: Conveyor backstop, incline conveyor reverse-rotation prevention | Bore: Ø45 mm | Keyway: J (New JIS Standard) | ||
| BS65-50J | BS65 — Bore Ø50 mm (J-type keyway) | Tsubaki | Series: BS65 | Type: Backstop Cam Clutch — Conveyor Reverse Prevention | Torque Range: 94~980,000 N·m (30~100,000 kgf·m) | Speed: Low-speed use | Keyway: J = New JIS Standard / E = Old JIS Type 2 | BS-HS Series: Enhanced free-running speed and torque available on request | Application: Conveyor backstop, incline conveyor reverse-rotation prevention | Bore: Ø50 mm | Keyway: J (New JIS Standard) | ||
| BS65-55J | BS65 — Bore Ø55 mm (J-type keyway) | Tsubaki | Series: BS65 | Type: Backstop Cam Clutch — Conveyor Reverse Prevention | Torque Range: 94~980,000 N·m (30~100,000 kgf·m) | Speed: Low-speed use | Keyway: J = New JIS Standard / E = Old JIS Type 2 | BS-HS Series: Enhanced free-running speed and torque available on request | Application: Conveyor backstop, incline conveyor reverse-rotation prevention | Bore: Ø55 mm | Keyway: J (New JIS Standard) | ||
| BS65-60J | BS65 — Bore Ø60 mm (J-type keyway) | Tsubaki | Series: BS65 | Type: Backstop Cam Clutch — Conveyor Reverse Prevention | Torque Range: 94~980,000 N·m (30~100,000 kgf·m) | Speed: Low-speed use | Keyway: J = New JIS Standard / E = Old JIS Type 2 | BS-HS Series: Enhanced free-running speed and torque available on request | Application: Conveyor backstop, incline conveyor reverse-rotation prevention | Bore: Ø60 mm | Keyway: J (New JIS Standard) | ||
| BS65-65J | BS65 — Bore Ø65 mm (J-type keyway) | Tsubaki | Series: BS65 | Type: Backstop Cam Clutch — Conveyor Reverse Prevention | Torque Range: 94~980,000 N·m (30~100,000 kgf·m) | Speed: Low-speed use | Keyway: J = New JIS Standard / E = Old JIS Type 2 | BS-HS Series: Enhanced free-running speed and torque available on request | Application: Conveyor backstop, incline conveyor reverse-rotation prevention | Bore: Ø65 mm | Keyway: J (New JIS Standard) |
