Square/Allen Drive Working Torque

Medbringarstorlek The square or hex drive of each drive is limited in its maximum output by its material and its engagement area. Since Atlas Copco uses a specially suited alloy-steel for its drive members, the following maximum torque output can be achieved without drive failure, provided the reaction member abuts close to the same plane as the nut to be turned.

If the reaction arm cannot abut on the same plane as the nut to be turned, less torque should be applied, as the additional side load has to be taken into consideration. When toque requirements are close in excess of the values listed above, use RT's/-9/ Sockets Hex-Drive with replaceable Hex Insert Bits.

RT series is available with square drive (standard) or option hexagonal/Allen drive. The table below reviews ideal working range for the respective drives.

Medbringarstorlek

Inch or mm

Drivningstyp

Maximalt arbetstryck

Probable Failure

ft lb

Nm

ft lb

Nm

1/2"

hexa-

353

478

392

531

1/2"

Kvadrat

367

497

408

553

5/8"

hexa-

689

934

766

1038

3/4"

hexa-

1191

1614

1324

1794

3/4"

Kvadrat

1239

1679

1377

1865

7/8"

hexa-

1892

2565

2102

2848

1 tum

hexa-

2824

3827

3138

4252

1 tum

Kvadrat

2937

3980

3263

4422

1 - 1/8"

hexa-

4021

5448

4468

6054

1 - 1/4"

hexa-

5516

7474

6129

8304

1 - 3/8"

hexa-

7341

9948

8157

11053

1 - 1/2"

hexa-

9531

12915

10590

14350

1 - 1/2"

Kvadrat

9912

13432

11014

14924

1 - 5/8"

hexa-

12118

16420

13465

18245

1 - 3/4"

hexa-

15135

20508

16817

22787

1 - 7/8"

hexa-

18616

25224

20684

28027

2 tum

hexa-

22593

30613

25103

34015

2 - 1/4"

hexa-

32168

43588

35742

48431

2 - 1/2"

hexa-

44126

59791

49029

66435

2 - 1/2"

Kvadrat

45891

62183

50990

69092

12mm

hexa-

298

404

331

449

17mm

hexa-

847

1147

941

1275

19mm

hexa-

1182

1602

1313

1780

22mm

hexa-

1835

2486

2039

2763

24mm

hexa-

2382

3228

2647

3587

27mm

hexa-

3392

4596

3769

5107

32mm

hexa-

5647

7652

6275

8502

36mm

hexa-

8040

10895

8934

12105

41mm

hexa-

11878

16094

13197

17882

46mm

hexa-

16774

22730

18638

25255

50mm

hexa-

21542

29190

23935

32433