Description
Features
Specification

Thern Worm Gear Hand Winches

The Worm Gear Hand Winches from Thern Winches & Cranes that are available at LES USA have fewer moving parts and are best known for their superior endurance and high reliability. Within a Worm gear is a gearbox which has two major parts called the worm and the bull gear.

It has been generalized that worm gear winches have a slower line speed and are less efficient than other designs. However, they can be self-braking, meaning that they stop when the driving worm gear stops which is make the process safer. This product is also extremely robust. If you are an industry that requires line speeds that are equal to planetary counterparts, then try the technologically advanced worm gears.

About the Thern Worm Gear Hand Winches:

The Worm Gear Hand winches from Thern Winches & Cranes provide accurate operation and long-lasting service for your industry. The models from Thern Winches & Cranes are enclosed in an oil bath which provides continuous lubrication of gears to minimize wear, except on Model 465. On Model 4WM2 oil seals keep oil in and dirt out.

Hex Drive and a handle are included. Model 4WM2 can be power-driven with a maximum of 400 rpm drill-motor. Additionally, the Thern Winches & Cranes Automatic Brake Models provide positive load control for lifting. Brake models have a PB or B suffix. Model 4WM2 features an internal mechanical brake.

  • Up to 4600 lb (2086 kg) capacity
  • Cast aluminium construction
  • Machine-cut worm gears
  • Bronze bearings
  • Enclosed oil bath
  • Internal mechanical brake
  • Corrosion-resistant
  • Handle adjustment
  • Mounting options
  • Two-Year Limited Warranty

Model Number

Of Worm gear Hand Winch

1st layer Loading rate (Ibs)

Mid drum Loading rate

(Ibs)

Full

Drum Loading rate

(Ibs)

Wire rope dia (in)

Drum capacity

1st layer (ft)1

Drum capacity

Mid drum

(ft)1

Drum capacity Full drum

(ft)1

Gear ratio

Force 2 to lift 1000Ibs

Weight

465

 

750

600

400

1/8 3/16

7

4

58

27

130

59

20:1

21

12

462

1000

700

500

1/8

3/16

7

4

61

28

140

61

15:1

34

15

4622PB

1000

700

500

1/8

3/16

7

4

61

28

140

61

15:1

26

21

472

2000

1700

1300

3/16 ¼

5/16

15

11

8

65

35

23

140

77

52

24:1

24

32

4WM2

2000

1500

1200

1/4

11

35

77

32:1

14

41

2W40-L

4000

2800

2200

-

-

-

-

26:1

50.4

111

2W40-M

4600

3300

2500

-

-

-

-

31:1

55.8

107

2W40-BL

4000

2800

2200

-

-

-

-

26:1

48.6

123

2W40-BM

4600

3300

2500

-

-

-

-

31:1

54

119