MATWELD, INC. PHONE:(270) 444-0085 FAX:(270) 443-6180
Matweld reserves the right to change parts, features, or specifications without notice.
09/09
11
02500 IMPACT WRENCH
MATWELD IMPACT WRENCH – 1” SQUARE DRIVE
TORQUE / TENSION CALIBRATION
WARNING ! ! ! ! !
OVER-TORQUING BOLTS WILL CAUSE BOLT FAILURE UNDER TRAFFIC.
GRADE 5 – TRACK AND FROG BOLTS:
SIZE
WRENCH PSI
TORQUE FT. LB.
TENSION LB.
3/4”
460
300
21,500
7/8”
500
485
29,500
1”
540
730
39,000
1 1/8”
565
900
46,000
1 3/8”
750
1700
69,000
GRADE 8 – TRACK AND FROG BOLTS:
SIZE
WRENCH PSI
TORQUE FT. LB.
TENSION LB.
3/4”
470
400
28,000
7/8”
525
640
36,000
1”
600
960
50,000
1 1/8”
670
1360
63,000
1 3/8”
890
2500
95,000
NOTE:
REFER TO THE WRENCH CALIBRATION INSTRUCTIONS ON THE PREVIOUS PAGE OR FOLLOW
GUIDELINES SET FORTH BY THE RAILROAD. IF THE TORQUE SETTING OF A PARTICULAR FAS-
TENER TYPE IS CRITICAL, THE WRENCH SHOULD BE SET AS CLOSE TO THE DESIRED TORQUE
AS POSSIBLE AND A CALIBRATED TORQUE WRENCH USED TO VERIFY OR CHECK THE FAS-
TENER TORQUE PERIODICALLY.