• Torque Range: Up to 1970 kNm (1452717 lb-ft)
• Speed Range: Up to 70 rpm
• Power Range: Up to 2393 kW
• Maximum Operating Pressure: 350 bar (5076 psi)
• Frame Sizes: 2000, 3000, 4000, 5000, 6000
• Displacement: 63108 to 380178 cm³/rev (3851 to 23200 in³/rev)
• Specific Torque: 1000 to 6000 Nm/bar (50853 to 305119 ft-lbs/1000 psi)

• High power and torque density
• Energy efficient
• Flexible with many sizes and few mechanical interfaces
• Insensitive to shock loads
• Very low moment of inertia
• Small footprint
• Freewheeling capability
• Through hole diameter of 270 mm
• Tandem mounting possibility
• Version with shrink disc coupling available for CBM 2000 to CBM 3000

The Hägglunds CBm is a radial piston hydraulic motor with a rotating cylinder block/hollow shaft and a stationary housing. Pistons are radially located in bores inside the cylinder block, and the distributor directs oil to and from the working pistons. Torque is produced when hydraulic pressure acts on the pistons, pushing cam rollers against the cam ring.

Oil main lines connect to ports A1 and C1, with drain lines to D-ports in the motor housing. The motor connects to the driven machine's shaft through the hollow shaft or spline of the cylinder block.

• Calculation Fundamentals: Includes formulas for power, torque, pressure, and flow rate calculations.
• General Data: Details on mounting, port connections, external loads, hydraulic fluids, and pressure limits.
• Motor Data: Specific torque, displacement, maximum torque, speed, operating pressure, and power for each frame size.

The system must ensure sufficient charge pressure at the low-pressure port, at least 1 bar above case pressure during operation, with specific considerations for shock loads.

The motor is designed to operate with hydraulic fluids conforming to ISO 11158 HM standards. The document emphasizes the importance of selecting hydraulic fluids that maintain the operating viscosity within the optimal range of 40 to 150 cSt to ensure efficiency and longevity. It also outlines the filtration requirements, recommending a contamination level better than 18/16/13 according to ISO 4406.

Overall efficiency diagrams are provided for different port connections, with specific labels for output power and efficiency. The document also includes pressure loss diagrams for various CBm models, indicating the relationship between pressure difference, output torque, and mechanical efficiency.

Instructions for horizontal and vertical mounting are detailed, highlighting the importance of using the correct drain ports to prevent exceeding maximum case pressure. Flushing is necessary to maintain optimal temperature and viscosity, with specific calculations provided for required flushing flow.

The document describes the freewheeling function, which allows the motor to operate without engaging the pistons, reducing flow loss. It outlines the necessary conditions for freewheeling, including draining main connections and introducing adequate pressure into the drain ports.

For optimal performance, the document recommends maintaining the system temperature at 50°C and ensuring the hydraulic fluid's viscosity remains within the specified range. It also advises on the appropriate number of port connections based on oil flow rates.

Freewheeling conditions for the Hägglunds CBm motor require pressurizing the case via drain connections and draining the main ports to the tank. The motor must be pressurized and flushed continuously during freewheeling. An accumulator can be added to the circuit to retract pistons quickly and reduce pressure spikes.

Power loss occurs due to viscous friction in the motor case even with minimal friction in bearings and no flow losses. Case flushing is necessary to prevent overheating, with required case pressure between 1.5 to 2 bar and oil temperature below 50°C.

For torque arm mounted motors, radial and axial forces must be checked. Permissible axial load for intermittent duty is 150,000 N. For continuous applications, consultation with Bosch Rexroth is advised. Dynamic and static load limits are provided for various CBm models.

Speed variation is influenced by leakage, friction, and load characteristics. High case oil viscosity (100-150 cSt) is recommended to minimize speed variation. A stiff hydraulic system enhances smooth operation.

A magnetic plug is standard in the CBm motor for detecting hydraulic system malfunctions and early wear. It should be inspected regularly.

The motor includes a Pt100 temperature sensor that monitors hydraulic fluid temperature. It operates with a 4-20 mA output and has specific technical specifications.

The motors are available in three corrosion protection categories: C3, C5, and CX, suitable for different environmental conditions. The standard color is orange (RAL 2002).

The motor can be adapted for hazardous areas with specific components, conforming to ATEX standards.

Two seal options are available: NBR for low temperatures and moderate oil temperatures, and FPM for higher temperatures and speeds.

Options include DLC-coated pistons and cam rollers for enhanced durability, especially in unclear operating conditions or risk of cavitation.

This kit allows for flushing through the driven shaft or drawing cables through the motor, prepared for a rotation speed sensor.

• Flange and torque arm mounting options are available, with specific instructions for lubrication and alignment to prevent wear.
• Vertical and submerged mounting options are also discussed, with recommendations for materials and protective measures against environmental factors.

• Recommended materials for spline shafts and driven shafts are specified, with yield strength requirements for different drive conditions.
• Material IDs and ordering information for mounting kits and accessories are provided.

• Torque arms and coupling adapters are available for different mounting configurations, with detailed dimensions and material specifications.
• Multi-disc parking brakes and speed sensors are offered as additional features, with technical data available in related documents.

For speeds of 6 rpm and above, use 1000 pulses. For speeds below 6 rpm, use 3600 pulses.

• ATEX/IECEx approved
• 1000 and 3600 pulses per revolution for enhanced speed control
• Direction of rotation readable from sensor
• Equipped with zero pulse
• Protection class IP65
• Optional cable set with junction box available

• Non-contact, wear-free system
• Robust design
• ATEX/IECEx version available
• Through hole version available

• Robust with inductive sensing principle
• 8192 steps per revolution for precise positioning
• Singleturn or multiturn options
• Multiple communication interfaces
• Protection class IP67/IP66

• VFCCA 1000 Free Circulation Valve: Compact and robust design, free circulation or freewheeling functions, maximum operating pressure: 350 bar, available in hydraulic and electric configurations.
• COCC 1200 Cross-over Valves: Protects motor from high pressure peaks, cavitation protection, standard pressure setting: 350 bar.
• VFWCB 600 Freewheeling Valve: Compact and robust design, multifunctional, available in electric, hydraulic, and manual configurations.
• VQCC 800 Hydraulic Quick Stop Valve: Compact and robust design, performance level D category 3 according to EN ISO 13849, low pressure loss.

• Closed Circuit Considerations: Charge pressure level, case drain flow, filter and cooler requirements.
• Open Circuit Considerations: Counter pressure minimum 2 bar, cross over relief valves, anticavitation valves.

Various data sheets and dimension drawings are available for further technical details.