NPK PH4 - Page 59

- 58 -
TORQUE VALUES FOR HAMMER FASTENERS
If hammer bracket fasteners are found to be loose, use the following chart. If repairs
are to be made, see the NPK Hydraulic Hammer Service Manual.
HAMMER
MODEL
BRACKET
TYPE
*HAMMER BRACKET **ADAPTER BRACKET
BOLT
DIA
BOLT TORQUE
ft/lbs (Nm)
BOLT
DIA
BOLT TORQUE
ft/lbs (Nm)
PH1 STANDARD 3/4"-10 280 (378) 5/8”-11 165 (225)
SKID STEER 3/4"-10 280 (378) N/A N/A
PH2 STANDARD 3/4"-10 280 (378) 5/8”-11 165 (225)
HEAVY DUTY 5/8”-11 150 (203) 5/8”-11 165 (225)
SCALING 5/8”-11 150 (203) 5/8”-11 165 (225)
SKID STEER 3/4"-10 280 (378) N/A N/A
PH3 STANDARD 1”-12 500 (675) 5/8”-11 165 (225)
HEAVY DUTY 1”-12 500 (675) 5/8”-11 165 (225)
PH4 STANDARD 1”-12 500 (675) 5/8”-11 165 (225)
HEAVY DUTY 1”-12 500 (675) 5/8”-11 165 (225)
*Torque hammer bracket bolts using anti-seize compound.
**DO NOT torque adapter bracket bolts using anti-seize compound.