Spur Gear Hand Winch - 4000 lb & 10,000 lb From Thern Winch

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Machine Cut Spur Gears for accurate and long lasting service.

Automatic Brake Models provide positive load control for lifting and lowering operations. Brake models have B suffix.

Corrosion Resistant durable paint finish combined with zinc and iridescent dichromate plating protects against corrosion.

Bronze and radial ball bearings provide smooth and efficient operation.

Spur,Gear,Hand,Winch,4000,10,000,lb,Thern Winch
Model M492B

4000 lb & 10,000 lb
Spur Gear Hand Winches

Model M492-12

Spur,Gear,Hand,Winch,4000,10,000,lb,Thern Winch
Model M452B-A

Large Diameter Drums minimize wear to extend wire rope life.

Spring Loaded Ratchets for positive engagement with gear.

Steel Gear Covers protect gears and help prevent injuries.

Handles Adjust in length to change force required to move load.

Wire Rope Assemblies sold separately.

Spur,Gear,Hand,Winch,4000,10,000,lb,Thern Winch
Model M452B

Spur Gear Hand Winches Up to 10,000 lb capacity

	Model M452B for lifting or pulling up to 4000 lbs. Includes brake. Owners Manual

	Model M452B-A narrow drum model, for lifting or pulling up to 4000 lbs. Includes Brake Owners Manual

	Model M492B for lifting or pulling up to 10,000 lbs. Includes brake Owners Manual

	Model M492-12 wide drum model for pulling only up to 10,000 lbs. Brake available for lifting. Owners Manual

	Model M452 with HW452 hand wheel model for pulling only up to 4,000 lbs. 10,000 lb model available. Owners Manual


		load rating (lb)				drum capacity¹
model number	description	1st layer	mid drum	full drum	wire rope diameter	1st layer	mid drum	full drum	single gear ratio	double gear ratio	force to lift 1000 lb²	approx. ship wt. (lb)

M452	marine duty (for pulling only)	4000	3200	2400	1/4 5/16 3/8	23 18 14	130 89 64	300 200 140	4.42:1	19.54:1	10 (double gear)	81
M452B	marine duty with brake (for lifting)	4000	3200	2400	1/4 5/16 3/8	23 18 14	130 89 64	300 200 140	-	19.54:1	10 (double gear)	89
M452B-A	marine duty with brake (for lifting) 4 in. drum width	4000	3200	2400	1/4 5/16 3/8	13 9 7	83 56 40	190 120 89	-	19.54:1	10 (double gear)	75
M492	marine duty (for pulling only)	10000	7000	5000	5/16 3/8 1/2	27 21 15	240 170 100	540 390 230	5.00:1	25.00:1	8 (double gear)	166
M492B	marine duty with brake (for lifting)	10000	7000	5000	5/16 3/8 1/2	27 21 15	240 170 100	540 390 230	-	25.00:1	8 (double gear)	173
M492-12	marine duty (for pulling only) 12 in. drum width	10000	7000	5000	5/16 3/8 1/2	46 37 27	380 270 160	850 610 360	5.00:1	25.00:1	8 (double gear)	183
M492B-12	marine duty with brake (for lifting) 12 in. drum width	10000	7000	5000	5/16 3/8 1/2	46 37 27	380 270 160	850 610 360	-	25.00:1	8 (double gear)	190

¹Actual drum capacities may be 25-30% less, due to non-uniform winding. Tension in the wire rope will also affect drum capacity. ²Approximate handle force required to lift 1000 lb with an empty drum, and maximum handle length.

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