WORM GEAR SERIES
Up to 2000 lb Capacity
When you need to lift, lower or position a heavy load, Thern’s worm gear hand winches are designed to deliver excellent performance and long life, no matter what your application.
QUICK FACTS
- Up to 2000 lb (907 kg) capacity
- Machine-cut worm gears
- Automatic brake models
- Mounting options
- Corrosion resistant
- Two-Year Limited Warranty
SERIES MODELS
- 465
- 462
- 4622PB
- 472
- 4WM2
NEED A QUOTE?
If you’re not sure what product you need and would like a quote, please fill out a request form.
Worm Gear Hand Winches Performance Characteristics — Metric |
|||||||||||
|
Load Rating |
Drum Capacity1 |
||||||||||
|
Model No. |
Description |
1st Layer |
Mid Drum |
Full Drum |
Wire Rope Dia. |
1st Layer |
Mid Drum |
Full Drum |
Gear Ratio |
Force2 to Lift 1000 lb |
Approx. Ship Wt. |
|
(kg) |
(kg) |
(kg) |
(mm) |
(m) |
(m) |
(m) |
(kg) |
(kg) |
|||
|
465 |
340.1 kg — open gears |
340.1 |
272.1 |
181.3 |
3.1 |
2.1 |
17.6 |
39.6 |
20:1 |
9.5 |
5.4 |
|
(recommended for pulling only) |
4.7 |
1.2 |
8.2 |
17.9 |
|||||||
|
462 |
453.5 kg — enclosed gearing |
453.5 |
317.5 |
226.7 |
3.1 |
2.1 |
18.5 |
42.6 |
15:1 |
15.4 |
6.8 |
|
(recommended for pulling only) |
4.7 |
1.2 |
8.5 |
18.5 |
|||||||
|
4622PB |
453.5 kg — enclosed gearing |
453.5 |
317.5 |
226.7 |
3.1 |
2.1 |
18.5 |
42.6 |
15:1 |
11.7 |
9.5 |
|
with brake (for lifting) |
4.7 |
1.2 |
8.5 |
18.5 |
|||||||
|
472 |
907.1 kg — enclosed gearing |
907.1 |
771.1 |
589.6 |
4.7 |
4.5 |
19.8 |
42.6 |
24:1 |
10.8 |
14.5 |
|
(recommended for pulling only) |
6.3 |
3.3 |
10.6 |
23.4 |
|||||||
|
7.9 |
2.4 |
7.0 |
15.8 |
||||||||
|
4WM2 |
907.1 kg — enclosed gearing |
907.1 |
680.3 |
544.3 |
6.3 |
3.3 |
10.6 |
23.4 |
32:1 |
6.3 |
18.5 |
|
with brake (for lifting) – Drill Driveable |
4.7 |
(not recommended for this winch) |
|||||||||
|
Please contact factory or nearest Thern distributor for firm fixed price and delivery. 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 453.5 kg with an empty drum and maximum handle length. |
|||||||||||
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.
Worm Gear 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 |
Gear Ratio |
Force2 to Lift 1000 lb |
Approx. Ship Wt. |
|
|
(lb) |
(lb) |
(lb) |
(in) |
(ft) |
(ft) |
(ft) |
(lb) |
(lb) |
||||
|
465 |
750 lb — open gears |
750 |
600 |
400 |
1/8 |
7 |
58 |
130 |
20:1 |
21 |
12 |
|
|
(recommended for pulling only) |
3/16 |
4 |
27 |
59 |
||||||||
|
462 |
1000 lb — enclosed gearing |
1000 |
700 |
500 |
1/8 |
7 |
61 |
140 |
15:1 |
34 |
15 |
|
|
(recommended for pulling only) |
3/16 |
4 |
28 |
61 |
||||||||
|
4622PB |
1000 lb — enclosed gearing |
1000 |
700 |
500 |
1/8 |
7 |
61 |
140 |
15:1 |
26 |
21 |
|
|
with brake (for lifting) |
3/16 |
4 |
28 |
61 |
||||||||
|
472 |
2000 lb — enclosed gearing |
2000 |
1700 |
1300 |
3/16 |
15 |
65 |
140 |
24:1 |
24 |
32 |
|
|
(recommended for pulling only) |
1/4 |
11 |
35 |
77 |
||||||||
|
5/16 |
8 |
23 |
52 |
|||||||||
|
4WM2 |
2000 lb — enclosed gearing |
2000 |
1500 |
1200 |
1/4 |
11 |
35 |
77 |
32:1 |
14 |
41 |
|
|
with brake (for lifting) – Drill Driveable |
3/16 |
(not recommended for this winch) |
||||||||||
|
Please contact factory or nearest Thern distributor for firm fixed price and delivery. 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. |
||||||||||||
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.
Vertical Lead Block Series
Wire Rope Assemblies
Galvanized or stainless steel wire rope assemblies, available in various lengths. Visit our Rope and Rigging product page for more information. 
Worm Gear Hand Winches — Imperial Dimensions |
|||||||||||||||||
|
Model No. |
Drum Dia. |
Flange Dia. |
Drum Width |
A |
B |
C |
D |
E |
F |
G |
H |
J |
K |
L |
M |
S (hole dia.) |
T |
|
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
(in) |
|
|
465 |
1.50 |
4.00 |
2.81 |
6.50 |
10.50 |
5.44 |
3.40 |
1.40 |
6.38 |
8.75 |
10.59 |
2.00 |
5.75 |
2.50 |
4.50 |
.40 |
.19 |
|
462 |
1.50 |
4.06 |
2.81 |
7.75 |
10.25 |
5.63 |
2.38 |
4.38 |
5.88 |
9.00 |
13.38 |
2.00 |
4.44 |
2.50 |
3.50 |
.40 |
.19 |
|
4622PB |
1.50 |
4.06 |
2.81 |
7.50 |
11.81 |
5.62 |
2.40 |
4.38 |
7.60 |
10.59 |
15.59 |
2.00 |
4.44 |
2.50 |
3.50 |
.40 |
.19 |
|
472 |
2.50 |
5.00 |
5.00 |
10.12 |
12.00 |
7.12 |
3.06 |
5.81 |
7.94 |
7.25 |
13.38 |
3.75 |
6.69 |
4.00 |
5.00 |
.40 |
.25 |
|
4WM2 |
2.50 |
5.00 |
5.00 |
13.50 |
15.56 |
8.56 |
3.31 |
6.04 |
11.56 |
10.59 |
17.30 |
1.75 |
3.75 |
4.00 |
13.50 |
.41 |
— |
|
Dimensions are for reference only and subject to change without notice. |
|||||||||||||||||
Worm Gear Hand Winches — Metric Dimensions |
|||||||||||||||||
|
Model No. |
Drum Dia. |
Flange Dia. |
Drum Width |
A |
B |
C |
D |
E |
F |
G |
H |
J |
K |
L |
M |
S (hole dia.) |
T |
|
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
|
|
465 |
38.1 |
101.6 |
71.3 |
165.1 |
266.7 |
138.1 |
86.3 |
35.5 |
162.0 |
222.2 |
268.9 |
50.8 |
146.0 |
63.5 |
114.3 |
10.1 |
4.8 |
|
462 |
38.1 |
103.1 |
71.3 |
196.8 |
260.3 |
143.0 |
60.4 |
111.2 |
149.3 |
228.6 |
339.8 |
50.8 |
112.7 |
63.5 |
88.90 |
10.1 |
4.8 |
|
4622PB |
38.1 |
103.1 |
71.3 |
190.5 |
299.9 |
142.7 |
60.9 |
111.2 |
193.0 |
268.9 |
395.9 |
50.8 |
112.7 |
63.5 |
88.90 |
10.1 |
4.8 |
|
472 |
63.5 |
127 |
127 |
257.0 |
304.8 |
180.8 |
77.7 |
147.5 |
201.6 |
184.1 |
339.8 |
95.2 |
169.9 |
101.6 |
127 |
10.1 |
6.3 |
|
4WM2 |
63.5 |
127 |
127 |
342.9 |
395.2 |
217.4 |
84.0 |
153.4 |
293.6 |
268.9 |
439.4 |
44.4 |
95.2 |
101.6 |
342.9 |
10.4 |
— |
|
Dimensions are for reference only and subject to change without notice. |
|||||||||||||||||
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.
