Service Manual
Series 45 J Frame Open Circuit Axial Piston Pumps
520L0607
• Rev AI • Sep 2013
9
Technical Specifications
General Specifications
Features and options
Model
Feature
Unit
J45B
J51B
J60B
J65C
J75C
Maximum Displacement
cm³ [in³]
45 [2.75]]
51 [3.11]
60 [3.66]
65 [3.97]
75 [4.58]
Flow at rated speed (theoretical) l/min
[US gal/min]
126.0
[33.3]
137.7
[36.4]
156.0
[41.2]
162.6
[42.9]
180
[47.5]
Input torque at maximum
displacement (theoretical)
N•m/bar
[lbf•in/1000 psi]
0.716
[436.9]
0.811
[495.1]
0.956
[583.6]
1.035
[631.4]
1.193
[728.1]
Mass moment of inertia of
internal rotating components
kg•m²
[slug•ft²]
0.00455
[0.00336]
0.00455
[0.00336]
0.00455
[0.00336]
0.00433
[0.00319]
0.00433
[0.00319]
Weight
Axial ports
kg [lb]
23.13 [51]
Radial ports
26.65 [58.8]
Rotation
Clockwise, Counterclockwise
Mounting
2 bolt SAE-B, 4 bolt SAE-C
Auxiliary mounting
SAE-A, SAE-B, SAE-BB, SAE-C
System ports (type)
SAE R-ring boss. 4-bolt split flange
System ports (location)
Axial, Radial
Control types
PC, Remote PC, LS, LS with internal bleed
Shafts
Splined
13-tooth, 14-tooth, 15-tooth
Tapered
Ø 31.75 mm [1.25 in], 1:8 taper
Straight
Ø 31.75 mm [1.25 in]
Displacement limiters
Available
Ratings
Model
Rating
Units
J45B
J51B
J60B
J65C
J75C
Input speed¹
minimum
min
-1
(rpm)
500
500
500
500
500
continuous
2800
2700
2600
2500
2400
maximum
3360
3240
3120
3000
2880
Working
pressure
maximum
bar [psi]
310
[4495]
310
[4495]
310
[4495]
260
[3770]
260
[3770]
External shaft
loads
External moment (M
e
) N•m [lbf•in]
226
[2000]
226
[2000]
226
[2000]
226
[2000]
226
[2000]
Thrust in (T
in
), out (T
out
) N [lbf]
2200
[495]
2200
[495]
2200
[495]
2200
[495]
2200
[495]
Bearing life
at 140 bar [2030 psi]
B
10
hours
29 712
29 712
29 712
10 755
10 755
at 210 bar [3045 psi]
6834
6834
6834
2474
2474
at 260 bar [3770 psi]
3151
3151
3151
—
—
at 310 bar [4495 psi]
1666
1666
1666
—
—
Mounting flange
load moments
Vibratory
(continuous)
N•m [lbf•in]
SAE-C: 1500 [14 000], SAE-B: 735 [6500]
Shock (max)
SAE-C: 5600 [50 000], SAE-B: 2600 [23 000]
1. Continuous input speeds are valid at 1 bar absolute [0 in HG vac] inlet pressure. Maximum input speeds require changing
the inlet pressure or reducing pump displacement.