A10FM 63 Rexroth Motor - 63.1 cm³ Fixed Displacement
3400 rpm · 281 Nm · 100.1 kW at 280 bar · the largest standard displacement in the family
Everything in the A10FM series 52 leads here. Size 63 is the largest standard displacement offered, and it turns that 63.1 cm³ per revolution into the highest torque figure of the family: 281 Nm at 280 bar nominal, with about 230 Nm released at standstill for loads that have to be broken away before the shaft moves.
Speed steps back slightly to allow it - 3400 rpm at full displacement, drawing 215 L/min and putting 100.1 kW on the shaft. As with every size in the range, open and closed circuit operation is released, and displacement stays constant: flow decides speed, pressure difference decides torque.
Bearing capacity across the range
The drive shaft of the 63 sits in the same class as the 58 - 2000 N axially and 1700 N radially - which is a step up from every frame below it. Shaft loading of any kind reduces bearing life, so keeping well inside these numbers is worth the effort.
| Size | NG 23 | NG 28 | NG 37 | NG 45 | NG 58 | NG 63 |
|---|---|---|---|---|---|---|
| Axial force | 1000 N | 1000 N | 1500 N | 1500 N | 2000 N | 2000 N |
| Radial force | 1200 N | 1200 N | 1500 N | 1500 N | 1700 N | 1700 N |
58 or 63 - the only real decision
Both sizes share the housing, the mass and the bearing capacity, so the mounting does not change. What changes is where the output sits.
209 L/min · 97.4 kW
258 Nm · ≈205 Nm start
215 L/min · 100.1 kW
281 Nm · ≈230 Nm start
Power +2.8 %
Flow +2.9 %
Top speed −5.6 %
One interface detail worth knowing early
In the series 52 type code, the metric threaded working port to DIN 3852-1 is not released for size 063, while it is still available on the smaller frames. On this size the choices are the ISO 6162 flange port with metric or UNC fastening thread, or the threaded port to ISO 11926 with UN thread. Check the hoses and adapters before the drawing is fixed.
Full register, NG 63
| Displacement, geometric | 63.1 cm³/rev (3.84 in³) |
| Nominal / maximum pressure | 280 bar / 350 bar |
| Speed at full displacement | 3400 rpm |
| Inlet flow | 215 L/min (56.8 gpm) |
| Power at 280 bar | 100.1 kW (133 HP) |
| Torque at full displacement and 280 bar | 281 Nm (207 lb-ft) |
| Starting torque at n = 0 | approx. 230 Nm |
| Shaft rigidity R / W / C | 80590 / 60907 / 87667 Nm/rad |
| Rotary group inertia / acceleration | 0.0056 kgm² / 3300 rad/s² |
| Case volume / mass | 0.8 L / 22 kg |
Three answers before you order
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