Thern_M492
Thern_M452B

SPUR GEAR HAND WINCHES DOUBLE REDUCTION

M452 / M452B / M452B-A / M492 / M492B / M492-12 / M492B-12 / MB451 / MB491 / HW452 / HW492

Up to 10,000 lb. capacity

  • 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.
  • 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.
  • Two-year Limited Warranty 
Category:

Description

 

LOAD RATING (LB.) DRUM CAPACITY (FT.)1
MODEL NUMBER DESCRIPTION 1ST LAYER MID DRUM FULL DRUM WIRE ROPE DIA. (IN) 1ST LAYER MID DRUM FULL DRUM SINGLE GEAR RATIO DOUBLE GEAR RATIO FORCE2 TO LIFT 1000 LB. APPROX SHIP WT. (LB)
M452 4000 lb. – marine duty (for pulling only) 4000 3300 2500 1/4
5/16
3/8		 23
18
14		 130
89
64		 300
200
140		 4.42:1 19.54:1 10 lb.
(double gear)		 83
M452B 4000 lb. – marine duty with brake (for lifting) 4000 3300 2500 1/4
5/16
3/8		 23
18
14		 130
89
64		 300
200
140		 — 19.54:1 10 lb.
(double gear)		 91
M452-B 4000 lb. – marine duty with brake (for lifting) 4 inch drum width 4000 3300 2500 1/4
5/16
3/8		 13
9
7		 83
56
40		 190
120
89		 — 19.54:1 10 lb.
(double gear)		 83
M492 10,000 lb. – marine duty (for pulling only) 10,000 7400 5400 5/16
3/8
1/2		 27
21
15		 240
170
100		 540
390
230		 5.00:1 25.00:1 8 lb.
(double gear)		 166
M492B 10,000 lb. – marine duty with brake (for lifting) 10,000 7400 5400 5/16
3/8
1/2		 27
21
15		 240
170
100		 540
390
230		 — 25.00:1 8 lb.
(double gear)		 173
M492-12 10,000 lb. – marine duty (for pulling only) 12 inch drum width 10,000 7400 5400 5/16
3/8
1/2		 46
37
27		 380
270
160		 850
610
360		 5.00:1 25.00:1 8 lb.
(double gear)		 175
M492B-12 10,000 lb. – marine duty with brake (for lifting) 12 inch drum width 10,000 7400 5400 5/16
3/8
1/2		 46
37
27		 380
270
160		 850
610
360		 — 25.00:1 8 lb.
(double gear)		 190
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

1 Actual drum capacities may be 25-30% less, due to nonuniform winding. Wire rope tension will also affect drum capacity.
2 Approximate handle force required to lift 1000 lb. with an empty drum, and maximum handle length.

Model M452B shown with Disc Brake and Wire Rope.

None.

Related Products