Thern M452/492 Spur Winches at Southern Tool Catalog

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.

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Model M492B

4000 lb & 10,000 lb
Spur Gear Hand Winches

Model M492-12

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.

Model M452B

***Important: It is the owner's or operator's responsibility to determine the suitability of the equipment to its intended use. Study all applicable codes, manuals, and regulations. Be sure to read the Owner's Manual supplied with the equipment before operating it.

Performance Characteristics
		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.

Disk Brakes& Hand Wheels

model	description	Approximate Ship Weight (lb)
MB451	disc brake only for M452 (for lifting)	13
MB491	disc brake only for M492 and M492-12 (for lifting)	15
HW452	hand wheel only for M452 (for pulling only)	19
HW492	hand wheel only for M492 and M492-12 (for pulling only)	20