Linear Unit MRJ 80

The MRJ linear units have toothed belt drive and compact dimensions to provide high performance features such as high speed and good accuracy. For very high speeds, up to 10 m/s, the track rollers (journal bearings) of the type MRJ are particularly suitable.

The unit MRJ have a pre-tensioned steel reinforced AT polyurethane timing toothed belt.
In conjunction with a zero-backlash drive pulley high moments with alternating loads with good positioning accuracy, low wear and low noise can be realized.

All parts in the profile are protected from dust and other contaminations. As corrosion-resistant protection strip is available as option.

For CAD-files please contact Rollco.

Dimensions in mm.
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Product Information

Modulus of elasticity: E = 70000 N / mm2
Operating temperature: 0°C ~ +60°C For operating temperature out of the presented range, please contact Rollco.
Duty cycle: 100%
Technical Drawing
Designation Select all Lead Time * Carriage Length Lv Load capacity Cy Load capacity Cz Dynamic moments Mx Dynamic moments My Dynamic moments Mz Dynamic Load Capacity C Static Load Capacity C0 Max. permissible loads Forces Fpy Max. permissible loads Forces Fpz Max. permissible loads Moments Mpx Max. permissible loads Moments Mpy Max. permissible loads Moments Mpz Moved mass Max. repeatability Max length Lmax Max. stroke Min. stroke
2 260 17100 N 9000 N 198 Nm 511 Nm 1145 Nm 17100 9000 3400 N 1760 N 39 Nm 101 Nm 228 Nm 2,73 kg ± 0,08 6000 5698 0
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* Green: Stock item, normally immediate shipment. Blue: Contact us for delivery time.

Additional Drawing 1
Designation Select all Carriage version Load Cap. Cy Load Cap. Cz Dynamic Moment Mx Dynamic Moment My Dynamic Moment Mz Max perm. Loads Forces Fpy Max perm. Loads Moments Mpx Max perm. Loads Moments Mpy Max perm. Loads Moments Mpz
L2 34200 N 18000 N 396 Nm 9,0 * A (mm) Nm 17,1 * A (mm) Nm 6800 N 78 Nm 1,8 * A (mm) Nm 3,4 * A (mm) Nm
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Additional Drawing 2
Designation Select all Max travel speed Max. drive torque Ma No load torque with strip No load torque without strip Pulley drive ratio Pulley diameter Belt type Belt width Max. force transmitted by belt Specific spring constant Cspec Min. stroke Planar moment of inertia ly cm⁴ Planar moment of inertia lz cm⁴
10 m/s 29,4 Nm 1,4 Nm 1,1 Nm 210 mm/rev 66,84 AT5 50 880 N 960000 N 0 129 ,1 173,40
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Additional Drawing 2
Designation Select all Carriage Length Lv Mass of linear unit Mass moment of inertia (10⁻⁵ kg * m²) Planar moment of inertia ly cm⁴ Planar moment of inertia lz cm⁴ Moved mass
260 8,2 + 0,0075 * Stroke (mm) kg 424,4 + 0,0391 * Stroke (mm) 129 ,1 173,40 2,73 kg
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