Radial piston hydraulic motor Hägglunds Atom HÄGGLUNDS ATOM High power density High torque density Energy efficient Maximum operating pressure: 350 bar [5 076 psi] Flexible: many sizes, few mechanical interfaces Insensitive for shock loads Very low moment of inertia Specific torque: 8 to 40 Nm/bar Small footprint (total occupied volume) Through hole diameter 60 mm Ready for environmentally acceptable hydraulic fluids (no internal paint) RE 15354, Version: 10.2022, Replaces: 01.2021, EN Bosch Rexroth AB

Hägglunds Atom | Radial piston hydraulic motor

Radial piston hydraulic motor | Hägglunds Atom 11.1 Special index 06: Mounting flange positioned . 11.2 Special index 33: Motor for marine environment.. 40

Hägglunds Atom | Radial piston hydraulic motor Ordering code In order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be stated in full in all correspondence e.g. when ordering spare parts. Example Hägglunds Atom motor: Motor series Atom Feature Standard Specific torque, Nm/bar Frame size 10 Frame size 20 Frame size 30 Mounting alternatives, drive shaft Spline DIN 5480 N Mounting alternatives, motor case Front flange Center flange Prepared for brake or tandem kit No Mounted brake Single speed motor

Radial piston hydraulic motor | Hägglunds Atom Through hole Speed sensor Temperature sensor Reinforced bearing Explosive environment Motor approved for ATEX gas group IIB Motor approved for ATEX gas group IIC Painting system C3 (corrosivity category medium) C5 (corrosivity category very high) CX (corrosivity category extreme) Special RAL 1000 - 9023 **)Specify with RAL colour code Painting colour Internal paint Without paint Modification Current modification Special design Standard Special index ● = Available For exact, non-rounded values of specific torque, see 4.3 Motor data page 11 Only available...

Hägglunds Atom | Radial piston hydraulic motor Shaft side Connection side Fig. 1: Section view of radial piston hydraulic motor 6. Cylindrical roller bearing When the hydraulic pressure is acting on the pistons, the cam rollers are pushed against the slope on the cam ring that is rigidly connected to the housing, thereby producing 4. Cylinder block, spline a torque. The cam rollers transfer the reaction force to the pistons which are guided in the cylinder block. Rotation therefore occurs, and the torque available is proportional Bosch Rexroth‘s hydraulic industrial motor Hägglunds Atom is of...

Radial piston hydraulic motor | Hägglunds Atom Fluid connections Fig. 2: Hydraulic symbol, radial piston hydraulic motor Port locations and dimensions, see Table 1: Port dimensions

Hägglunds Atom | Radial piston hydraulic motor Connection side of the motor Shaft side of the motor Fig. 3: Port connections Hägglunds Atom Table 1: Port dimensions Connection Description Dimensions Atom 10 - Atom 20 Main connection If A is used as the inlet, the motor shaft rotates counter clockwise, viewed from the motor shaft side Main connection If C is used as the inlet, the motor shaft rotates clockwise, viewed from the motor shaft side Drain outlet Alternative drain outlet / or flushing inlet Alternative drain outlet / or flushing inlet Flushing connection For flushing of radial lip seal....

Radial piston hydraulic motor | Hägglunds Atom Technical data Note! Since this size of hydraulic motor often is used in open loop systems, calculations in chapter 4 Technical data, are calculated with 2 bar (29 psi) low pressure. Calculation fundamentals Table 2: Calculation fundamentals. Metric Output power Output torque (ηm=98%) Pressure required (ηm=98%) Output speed Inlet power 5252 Ts⋅(p-∆pl-pc )⋅ηm 1000 T⋅1000 Ts⋅ηm n ⋅ Vi 231 q - ql Vi q⋅(p-pc ) 1714 Output torque Specific torque Rotational speed Required pressure Pressure loss Flow rate required Total volumetric loss Mechanical efficiency...

Hägglunds Atom | Radial piston hydraulic motor General data Table 3: General data (metric) Frame size Atom 10 Port connections External loads See 4.13 Permissible external loads Hydraulic fluids Pressure See 4.5 Hydraulic fluids Maximum operating pressure Maximum peak pressure Low pressure Maximum case pressure Maximum case peak pressure Temperature limits of case drain oil Seal type: NBR (Nitrile) Seal type: FPM (Viton) Oil volume in motor case Moment of inertia for rotary group Peak pressure 420 bar maximum, allowed to occur up to 10 000 times. Momentary pressure spikes t< 0.1 s of up to 8...

Radial piston hydraulic motor | Hägglunds Atom Motor data Table 5: Specific data (metric) Frame size Nominal size Specific torque Nm/bar Atom 10 Maximum operating power kW Calculated as: Metric = Ts • (350-2) • 0,98 The motors are designed according to DNV-rules. Test pressure 420 bar. Peak pressure 420 bar maximum, allowed up to 10 000 times. 5) Flushing of motor case is required. See 4.10 Flushing Note! For minimum speed guidance, please see section 4.14: Low speed performance. Table 6: Specific data (US) Frame size Nominal size Specific torque Maximum speed Maximum operating power Calculated...

Hägglunds Atom | Radial piston hydraulic motor The motor working in braking mode The hydraulic system must be such that the motor will Required low pressure at the inlet port is according recieve sufficient low pressure at the low pressure port. This applies to all types of installations. The pressure at the low pressure port shall be at least one bar above the case pressure. 4.4.1 The motor working in driving mode only The required low pressure at the low pressure port, The diagrams are valid for 1 bar (14,5 psi) case pressure. should be according to diagram. See Fig. 4: With increasing case...

Radial piston hydraulic motor | Hägglunds Atom Fig. 5: Recommended low pressure for motor workning in braking mode, Hägglunds Atom 2-port connection. Valid for oil viscosity 40 cSt.