Allied Hy-Ram HR270, Safety, Operation And Maintenance Instructions, Page: 56 / 60

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14.0 Technical Information – [cont’d]
Table 14.1 Technical Data HR270 HR290
Impact Rate
a]
Blows/min 500 - 1000 460 - 900
Oil Flow Range GPM [L/min] 10 – 18 [35 - 70] 12 – 23 [45 - 90]
Operating Pressure
b]
PSI [bar] 1380 – 2470 [95 - 170] 1380 – 2400 [95 - 165]
Pressure Relief – Min
c]
PSI [bar] 2600 [180] 2645 [170]
Pressure Relief – Max
d]
PSI [bar] 2900 [200] 2610 [180]
Back Pressure PSI [bar] 60 –145 [4 - 10]
Oil Viscosity @ Operating Temperature
*Optimum [Permissible Range]
h]
cSt *30-60 [15 – 1000]
Oil Temperature F° [C°] -4 - 176° [-20 - 80°]
N2 Gas Charge – Back head 70 F° [21 C°] PSI [bar] 232 [16]
N2 Gas Charge – Accumulator @70 F° [21 C°] PSI [bar] Not Equipped
Port Connection – IN [OUT] Threaded BSPP 1/2-14 [same] BSPP 3/4-14 [same]
Line Size – Min. ID. IN [OUT] in. [mm] 1/ [12] [same] 3/4 [19] [same]
Breaker Tool:
Standard
Diameter
Work Length Type
in. [mm]
in. [mm]
Conical
2.68 [68]
12 [305]
Conical
2.93 [74.5]
16 [406]
Working Weight
e]
lbs [kg] 650 [295] 950 [430]
Carrier Weight
Excavator
f-E]
1000 lbs [kg]
8 – 20 [3.5 - 9] 13 – 22 [6 – 10]
Backhoe
f-B]
N/A 12 – 25 [5.5 – 11]
Skid Steer
f-SS]
N/A 8 + [3.5 +]
Mounting Family BR BR
a] Actual frequency depends on oil flow. Factors that affect oil flow include oil viscosity and temperature.
b] Actual operating pressure depends on oil flow, back pressure, material to be broken. Models HR390 thru HR710 are equipped with
Pressure Adjuster.
c] Permissible setting of MINIMUM pressure relief – DYNAMIC. Measured operating pr Minimum 435 psi [30 Bar]
d] Permissible setting of MAXIMUM pressure relief – STATIC. Not to exceed carrier’s main relief setting.
e] Weight reflects standard equipped Breaker configured for E, B & S-type carriers with typical mounting bracket & standard tool
f-E], f-B], f-SS], Values shown are guidelines – Always consult carrier manufacturer’s lift capacity to assure stable carrier operation. The
carrier must have adequate lift and hydraulic capacities to properly and safely operate the Breaker.
h] Many factors can reduce the service life of hydraulic components. Incorrect fluid viscosity is just one of these factors. To
prevent low (or high) viscosity from cutting short component life, select an appropriate fluid for the operating temperature
and viscosity range and then keep it maintained on a continuous basis.