Air Tuggers & Winches

Thern Spur Gear Manual Winch up to 10,000 lbs.

Thern’s Spur Gear Series of hand winches have up to 10,000 lb. capacity and lifts faster than a worm gear, but takes more force. Thern’s machine-cut spur gears provide long-lasting service and are available in a variety of configurations to meet the performance requirements of your manual pulling, hoisting or lowering application.

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Features

Machine-cut spur gears
Variety of configurations
Adjustable handles
Corrosion resistant
Two-Year Limited Warranty

Specifications Table

Spur Gear Double Reduction Hand Winches Performance Characteristics
		Load Rating				Drum Capacity1
Model No.	Description	1st Layer	Mid Drum	Full Drum	Wire Rope Dia.	1st Layer	Mid Drum	Full Drum	Sgl Gear Ratio	Dbl Gear Ratio	Force2 to Lift 1000 lb	Approx. Ship Wt.
		(lb)	(lb)	(lb)	(in)	(ft)	(ft)	(ft)			(lb)	(lb)
M452	4000 lb — marine duty	4000	3300	2500	1/4	23	130	300	4.42:1	19.54:1	10	83
	(for pulling only)				5/16	18	89	200			(dbl gear)
M452B	4000 lb — marine duty	4000	3300	2500	1/4	23	130	300	—	19.54:1	10	91
	with brake (for lifting only)				5/16	18	89	200			(dbl gear)
M452B-A	4000 lb — marine duty	4000	3300	2500	1/4	13	83	190	—	19.54:1	10	83
	with brake (for lifting)				5/16	9	56	120			(dbl gear)
	4-inch drum width				3/8	7	40	89
M492	10,000 lb — marine duty	10,000	7400	5400	5/16	27	240	540	5.00:1	25.00:1	8	166
	(for pulling only)				3/8	21	170	390			(dbl gear)
M492B	10,000 lb — marine duty	10,000	7400	5400	5/16	27	240	540	—	25.00:1	8	173
	with brake (for lifting)				3/8	21	170	390			(dbl gear)
M492-12	10,000 lb — marine duty	10,000	7400	5400	5/16	46	380	850	5.00:1	25.00:1	8	175
	(for pulling only)				3/8	37	270	610			(dbl gear)
	12-inch drum width				1/2	27	160	360
M492B-12	10,000 lb — marine duty	10,000	7400	5400	5/16	46	380	850	—	25.00:1	8	190
	with brake (for lifting)				3/8	37	270	610			(dbl gear)
	12-inch drum width				1/2	27	160	360
MB451	Disc brake only for M452 (for lifting)											13
MB491	Disc brake only for M492 and M492-12 (for lifting)											15

Delivery Reach

We deliver throughout North America. From the moment an order is received, our total focus is to ensure deliveries are shipped out as soon as possible and meet the exact specifications requested.

Need Assistance

Not sure how to operate your equipment? Don’t know which model is best for your project? If you have any technical questions, please feel free to call us at 1 (800) 461-1847.