Hammer Specifications - NPK PH1 Operator's Manual

HAMMER SPECIFICATIONS

HAMMER IMPACT
MODEL ENERGY
CLASS
ft. lb.
350
PH1
PH2 500
PH3 750
1300
PH4
HAMMER OIL FLOW
MODEL
gpm
PH1 7 - 15
PH2 7 -16
PH3 12 - 27
PH4 13 - 32
NITROGEN GAS PRECHARGE
HAMMER AT AMBIENT TEMPERATURE
(cold before operating)
MODEL
PH1
PH2
PH3
PH4
*The gas charge tolerances plus 0, minus 25 psi (2 bar).
*Specifications subject to change without notice.
NOTES:
1. Hydraulic operating pressure maximum is inlet pressure at the hammer with the oil at
operating temperature and with the gas charge set at the hot operating pressure. See
CHECKING THE HYDRAULIC PRESSURES section in the Service Manual.
2. Circuit relief pressure is at least 500 psi (35 bar) above hammer operating pressure.
3. Cold gas charge is the initial set with the hammer at ambient temperature.
4. Hot gas charge is checked after 1 to 2 hours of running and with a system oil temperature of

140 to 180F (60
5. Pressures listed are the maximum allowed. Use tolerance of minus 25 psi (2 bar).
FREQUENCY MOUNTING
bpm
550 - 1,100
500 - 1,200
500 - 1,150
400 - 1,000
(lpm)
(25 - 55) 2,175 - 2,465
(25 - 60) 2,175 - 2,465
(45 - 100) 2,175 - 2,465
(50 - 120) 2,175 - 2,465
*psi (bar)
175 (12)
175 (12)
175 (12)
175 (12)

to 80 C). This is the preferred check.
WORKING
STYLE WEIGHT
lbs. (kg)
Excavator 423 (192)
Skid Steer 674 (306)
Excavator 487 (221)
Skid Steer 735 (333)
Excavator 825 (374)
Skid Steer N/A
Excavator 1,064 (483)
Skid Steer N/A
HYDRAULIC OPERATING
PRESSURE
1
psi (bar)
(150 - 170)
(150 - 170)
(150 - 170)
(150 - 170)
AT OPERATING TEMPERATURE (hot,
after 1 to 2 hrs. operation)
*psi
220
220
220
220
- 7 -
TOOL
DIA. WORKING
LENGTH
in. (mm) in. (mm)
2.24 (57) 14.0 (356)
2.60 (66) 15.1 (384)
2.99 (76) 16.5 (419)
3.39 (86) 18.5 (469)
MINIMUM CIRCUIT
RELIEF
2
psi (bar)
2,965 (204)
2,965 (204)
2,965 (204)
2,965 (204)
(bar)
(15)
(15)
(15)
(15)