Hägglunds CB Large displacement and high torque hydraulic motors

The Hägglunds CB is a radial piston hydraulic motor designed for direct-drive applications that require high torque at low or variable speed. Unlike axial piston motors or gear motors that typically need a reduction gearbox to generate usable torque, the CB motor couples straight to the load — no gearbox, no belts, no couplings.

Key Engineering Characteristics

Full Torque From a Standstill

One of the defining features of the CB motor is its ability to produce rated torque the instant hydraulic pressure is applied, without needing to build up rotational speed first. For a crusher jammed with material, a winch starting under full load, or a mixer restarting mid-cycle, this eliminates the slow "spooling up" period that induction motors and gear reducers typically require.

Compact, Gearbox-Free Direct Drive

Because the CB motor mounts directly to the driven shaft, it removes the gearbox, couplings, and associated maintenance points entirely. Fewer rotating components mean:

Reduced maintenance intervals and simpler service

Lower risk of misalignment failures

A smaller mechanical footprint on the machine frame

Less rotational inertia, which improves responsiveness

Shock Load Tolerance

Heavy-duty processes rarely deliver a smooth, constant load. Shredders hit unexpected steel plates. Crushers encounter oversized rock. Roll mills experience surges. The CB motor's hydrostatic operating principle inherently absorbs these shock loads better than rigid mechanical gear trains, protecting downstream components and reducing unplanned downtime.

Four-Quadrant Operation

The CB motor can drive, brake, and reverse smoothly across all four operating quadrants (forward/reverse, motoring/braking). This is particularly valuable in winch and hoist applications where controlled deceleration and holding torque are just as important as raw driving force.

High Specific Torque in a Small Envelope

Specific torque — the torque produced per bar of hydraulic pressure — is a key metric for comparing LSHT motors. The CB series is engineered for a strong torque-to-weight and torque-to-volume ratio, letting designers extract large amounts of usable torque without oversizing the drive package.

Real-World Applications

Shredders and Recyclers

Scrap and waste shredders subject their drivetrains to some of the harshest shock loading in any industry — dense, irregular material jams unpredictably against the cutting mechanism. The CB motor's direct-drive design and shock tolerance let it deliver consistent torque while absorbing impact loads that would rapidly fatigue a geared system.

Roll Mills and Rubber/Tire Processing

In rubber mixing and roll milling, precise, high-torque, low-speed control is essential for consistent product quality. Hägglunds motors, including the CB series, are widely used in this sector specifically because of their smooth torque delivery and durability under continuous heavy use.

Mining: Crushers, Conveyors, and Feeders

Crushers and feeders in mineral processing plants need to start under load, tolerate rock-induced shock, and run for years with minimal downtime. The CB motor's ability to deliver full torque from standstill, combined with a rugged radial piston design, makes it a natural fit for these punishing environments.

Marine and Winch Systems

Onboard winches, anchor handling systems, and steering gear benefit from the CB motor's four-quadrant operation — smooth control when hauling in, controlled braking when paying out, and the compact footprint needed in space-constrained vessel machinery rooms.

Sizing and Selecting a CB Motor

Choosing the right CB frame size comes down to matching displacement, pressure, and speed to the application's torque and RPM requirements. In practice, engineers work through a few core questions:

1. What torque does the application demand at startup and during continuous operation? Peak breakaway torque often exceeds running torque significantly, especially for crushers and shredders.

2. What speed range is required? LSHT motors like the CB are optimized for low RPM; if the application needs high speed, a different Hägglunds model (like the Atom) may be more appropriate.

3. What is the duty cycle? Continuous duty, intermittent starts, or frequent reversing all affect thermal management and component selection.

4. What mounting configuration fits the machine? CB motors are available in various mounting arrangements, including foot-mounted and torque-arm designs, to suit different mechanical interfaces.

5. What hydraulic power unit will drive it? Pump selection, system pressure, and cooling capacity all need to be matched to the motor's displacement and expected duty.

Because undersizing a direct-drive motor leads to stalling or overheating under load, and oversizing adds unnecessary cost and system complexity, most CB installations are specified in partnership with a Bosch Rexroth application engineer rather than selected purely from a catalog table.

For more information on the CB hydraulic motor, please visit https://www.baolilaihydraulic.com/product/.

Specifications

Selection Table

Q1: Is the Hägglunds CB motor a piston motor or a gear motor?

A1: It's a radial piston motor. Pistons arranged radially around the motor housing act against a cam profile, converting hydraulic pressure directly into torque without the reduction gearing that gear motors and many axial piston systems require.

Q2: What industries commonly use the Hägglunds CB motor?

A2: Mining and mineral processing, scrap and waste shredding, pulp and paper, rubber and tire manufacturing, marine deck machinery, and general heavy material handling are the most common application areas.

Q3: What is the price and delivery time of the CB hydraulic motor?

A3: The specific price and delivery time will be provided based on the specific model you provide.

Q4:How to purchase a CB hydraulic motor?

A4:You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.