
- Usually Ships Following Business Day
Action Hardware
Chain Hoist Direct Drive (1:1 Reduction) 1in Shaft
- Usually Ships Following Business Day
- availability:
- available
This Overhead Door Chain Hoist (Direct Drive) is engineered for operating large, heavy-duty commercial and industrial overhead doors. Designed to mount directly to a 1-inch shaft, this unit provides manual operation via hand chain when power operation is not required or available. It's ideal for facilities requiring dependable, space-efficient manual control.
The kit includes a 26-foot hand chain, 1 chain keeper, 2 shaft collars, and a 1/4" shaft key. The system requires a minimum 5-3/8" offset from the shaft centerline to the wall and features a sprocket with an 8-13/16" outer diameter for optimal torque transfer.
Product Features
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Compatible with 1" diameter shaft
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Direct drive configuration for smooth manual control
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Sprocket diameter: 8-13/16" outer / 7-7/16" inner
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Requires 5-3/8" shaft-to-wall offset for proper installation
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Ideal for tight spaces and heavy overhead doors
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Built for commercial and industrial environments
Kit Includes
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26 feet of hand chain
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Chain keeper
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Two shaft collars
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1/4" key for shaft
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Pre-assembled for streamlined installation
Installation Overview
Shaft-Mounted Units (1:1, JR-ST, JR-RD, JRG):
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Mount unit on the shaft; align door sprocket with small 9-tooth sprocket
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Use set screws and shaft collars to secure the unit
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Install roller chain using connector link
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Optional wall bracket prevents unit from swinging
Final Steps :
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Loop the hand chain around the pocket wheel
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Chain length should hang ~1 ft from the floor
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Use pliers to open and reconnect the hand chain loop
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Install the chain keeper to hold chain clear of door opening