Prostar Hoist - Gearbox

Lightweight, quiet and portable: The CM Prostar electric chain motor with robust features is designed and built for the unique rigging needs encountered at small venues like theatres, hotels, exhibitions, and conferences.

The gears and Protector are packed at assembly with grease and should not need to be renewed unless the gears have been removed from the housing and degreased.
Prostar Hoist Part - GearBox
KEY # PART # DESCRIPTION QTY
620-107 20353 Main Frame (Includes 620-108 abd 620-109) 1
620-108 20705 Lift Wheel Seal 1
620-109 88636 Protector Bearing, Main Frame Side 1
620-111 20665 Protector Assembly - 6 FPM, 1000 lb 1
  20645 Protector Assembly - 8 FPM, 500 & 600 lb 1
  20660 Protector Assembly - 8 FPM, 1000 lb 1
  20665 Protector Assembly - 12 FPM, 500 lb 1
  20638 Protector Assembly - 12 FPM, 600 lb 1
  20662 Protector Assembly - 12 FPM, 1000 lb 1
  20660 Protector Assembly - 13.4 FPM, 550 lb 1
  20645 Protector Assembly - 16 FPM, 250 & 300 lb 1
  20660 Protector Assembly - 16 FPM, 500 lb 1
  20648 Protector Assembly - 20 FPM, 500 lb 1
  20661 Protector Assembly - 20 FPM, 600 lb 1
  20638 Protector Assembly - 24 FPM, 250 & 300 lb 1
  20662 Protector Assembly - 24 FPM, 500 lb 1
  20648 Protector Assembly - 40 FPM, 250 lb 1
  20661 Protector Assembly - 40 FPM, 300 lb 1
620-112 88640 Protector Thrust Washer 2
620-113 20351 Gear Housing (Includes 620-114) 1
620-114 88636 Protector Bearing - Gear Housing Side 1
620-115 88635 First Pinion Bearing 1
620-127 20666 Lift Wheel & Gear Assembly - 6 FPM, 1000 lb 1
  20664 Lift Wheel & Gear Assembly - 8 FPM, 500 & 600 lb 1
  20666 Lift Wheel & Gear Assembly - 12 FPM, 500 lb 1
  20647 Lift Wheel & Gear Assembly - 12 FPM, 600 & 1000 lb 1
  20664 Lift Wheel & Gear Assembly - 13.4 FPM, 550 lb 1
  20664 Lift Wheel & Gear Assembly - 16 FPM, 250, 300 & 500 lb 1
  20657 Lift Wheel & Gear Assembly - 20 FPM, 500 & 600 lb 1
  20647 Lift Wheel & Gear Assembly - 24 FPM, 250, 300 & 500 lb 1
  20657 Lift Wheel & Gear Assembly - 40 FPM, 250 & 300 lb 1
620-128 88637 Lift Wheel Bearing 2
620-129 88638 Lift Wheel Thrust Washer 2
620-130 20704 Lift Wheel Shaft Seal 1
620-131   First Pinion & Shaft - Not Available for Sale 1
620-134 920718 Gear Housing Screw 4
620-136 920720 Frame Pin 4
620-148 20313 Lift Wheel Shaft 1
620-149 88639 First Pinion Thrust Washer 2
620-155 20758 Caution Label 1
620-160 20714 Dead End Plate (Double Chained) 1
620-168 73715 Dead End Plate Screw 2
620-170 20794 ID Label 1
620-174 20755 Gasket 1
620-189 987859 Chain Guide Screw 1
620-190 20812 Chain Guide Spacer 1
620-192 20622 Chain Guide Stripper 1
Protector: The hoist is equipped with a Protector™ that is designed to allow the first gear to slip on an excessive overload. 
If the hook block or chain stop contacts the hoist frame, the Protector will function to stop the hoisting or lowering operation and protect the hoist components from damage. However, continued, prolonged or repeated slipping of the Protector will damage the Protector and cause overheating of the internal hoist components.

Chain Guide, Liftwheel and Sheave Wheel: When the hoist is disassembled for inspection and/or repair, the chain guide, stripper, sheave wheel (on double chain unit) and liftwheel must be lubricated with Lubriplate® Bar and Chain Oil 10-R (Fiske Bros. Refining Co.) prior to reassembly. The lubricant must be applied in sufficient quantity to obtain natural runoff and full coverage of these parts.

Bearings Needle bearings (620-109, 620- 114, 620-115, 620-128 and 620-164) are packed at assembly with grease and should not need to be relubricated. However, if the housings (620-113 and 620- 107), liftwheel (620-127) or sheave wheel (620-162) have been degreased, these bearings should be greased using “Century Lubricants HB-11, #3” grease