One-way bearings

One-way bearings and their use in the New Mobility

Hybrid power trains consist of a combustion engine and an electric motor which means space under the vehicle bonnet is at a premium. In addition auxiliary hybrid systems such as oil and climate control pumps are needed.  Such challenges are best faced with ROLLAX specialized bearings tailored exactly to the needs of your application.

One-way bearings from ROLLAX– The experts in bearing technology

One-way bearings from ROLLAX, aka anti-reverse bearings or clutch bearings, are suitable, among other things, for power splitting devices which are supplied from two different power sources. This could be a pump that is powered either electrically or by a combustion engine – as illustrated in the chart below.

The one-way bearings are designed in such a way that torque is transmitted in only one direction. Allowing free motion of the drive in the opposite direction, and so transmitting force to the auxiliary device.

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ROLLAX specialised solutions – versatility in design

There is no standard solution for combining hybrid drives. With an electric or hybrid vehicle all systems must continue uninterrupted when the vehicle is in the so called gliding mode. This means, the combustion engine is disengaged and power is delivered by the electric motor. Servo and brakes are powered electromechanically. To this end new systems with highly integrative bearing solutions fulfilling multiple requirements are needed, without increasing the design envelope of a classical wheel brake.

ROLLAX one-way bearings are individually adapted for use in manifold solutions for hybrid devices such as generators, power splitting devices, pumps, clutches and brakes. They are space saving and cost effective in manufacture at medium volumes.

ROLLAX one-way bearings – possible applications

Electromechanical parking-brakes

ROLLAX one-way bearings are also eminently suited to the field of “electromechanical parking-brakes” (EMPB), on the one hand as a self-locking device for the parking-brake function while at the same time ensuring high-effectiveness and freedom of movement of the brakes respectively.

Hybrid Drives

The dual drives in auxiliary devices such as cooling and oil pumps can create power surges, in these cases it is necessary that the energy arrives in the correct device and doesn’t drive the other motor. In order to ensure correct operation of alternating drive systems ROLLAX uses mechanical one-way bearings with roller clutch, and individually adapted, integrated ball bearings.

ROLLAX one-way bearings provide the ideal balance between idle torque-friction, precise engagement, longevity and compact design at minimal cost.

One-way bearings – The ideal solution in numerous fields

A modular system of deep groove ball bearings or needle bearings provide a choice between fixed and floating bearing solutions. In the case of a floating bearing and a suitable shaft, the cost-effective saving of the inner ring, running directly on the shaft is a viable option. We look forward to supporting you in your application.

One-way bearings

      • One-way bearing
      • One-way roller bearing
      • One-way bearing
      • One-way bearing
      • One-way bearing
      • One-way bearing
      • One-way bearing – Bi-directional
      • Sleeve type one-way bearing
      One-way bearing

      One-way bearing

      • One-way roller bearing with clamping contour exterior
      • Integrative ball bearing as floating bearing absorbing radial forces
        • Medium locking torque
        • Very low radial space requirement
        • Torque transmission via wrench flat on outer shoulder
      One-way roller bearing

      One-way roller bearing

      • One-way roller bearing with clamping contour interior
        • Without integrated support bearing
        • High locking torque
        • Extremely low radial space requirement
      One-way bearing

      One-way bearing

      • One-way roller bearing with clamping contour exterior
      • Two integrative roller bearings as floating bearing absorbing high radial forces
        • High locking torque
        • Extremely low radial space requirement
      One-way bearing

      One-way bearing

      • One-way roller bearing with clamping contour exterior
      • Integrative ball bearing as fixed bearing absorbing both axial and radial impact forces
        • Medium locking torque
        • Torque transmission via customised outer shoulder
      One-way bearing

      One-way bearing

      • One-way roller bearing with clamping contour exterior
      • Integrative ball bearing as fixed bearing absorbing both axial and radial impact forces
        • Medium locking torque
        • Torque transmission via press fit
      One-way bearing

      One-way bearing

      • One-way roller bearing with interior clamping groove
      • Two integrative roller bearings as floating bearing absorbing radial impact forces
        • High locking torque
        • Torque transmission via press fit.
      One-way bearing – Bi-directional

      One-way bearing – Bi-directional

      • Bi-directional one-way roller bearing
      • Very high locking torque
      • Engage/disengage release wheel
      • Allows torque transmission in one rotational direction while stopping torque transmission in the opposite direction
      Sleeve type one-way bearing

      Sleeve type one-way bearing

      • Sleeve type one-way bearing with exterior clamping groove
      • High locking torque
      • Low space requirement
      • Cost-optimized by use of needle rollers and plastic cage

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