Assa Abloy SL500 Tension Wheel Assembly (Return Pulley)

The SL500 tension wheel assembly — also known as the SL500 return pulley — keeps the drive belt of your sliding door operator correctly tensioned for smooth, quiet, and reliable door travel. This complete, ready-to-install assembly is a precision-engineered replacement for OEM article no. 330000447, fitting Besam SL500, SL510 and Entrematic PSL100/150 operators.

Why Technicians Choose This Assembly

• Complete assembly — wheel, bracket and hardware pre-assembled; no rebuilding of worn components, minimizing door downtime.
• OEM-spec fit — direct replacement for the original Assa Abloy SL500 pulley; bolt-on installation with no modification.
• Fixes common faults — eliminates door jerking, belt slippage and noisy operation caused by a worn or seized tension wheel.
• Durable construction — wear-resistant wheel and sealed bearing built for high-traffic commercial entrances.

Compatibility

• Assa Abloy / Besam SL500, SL510 sliding door operators
• Entrematic PSL100 / PSL150
• Replaces OEM no. 330000447 (cross-reference: 1007118, P-06039912)

In stock and ready to ship worldwide. Order your SL500 tension wheel assembly today — bulk pricing available for contractors and maintenance companies. Not sure this is the right part? Send us a photo of your operator and we will confirm fitment within 24 hours.