Series R

MR hydraulic motors provide reliable performance, high load capacity, and flexible configuration options for medium-duty and heavy-duty applications. Featuring a robust spool valve Gerotor design, variable flange, shaft, and port options, as well as optional high-pressure seals, they can be precisely adapted to industrial and mobile applications. Learn more...

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Picture1 Hydraulic Motor M+S RK200CD
Hydraulic Motor M+S RK200CD
  • hydraulic motor RK200CD by M+S
  • displacement: 200 ccm/REV
  • ports: G 1/2’’
  • shaft: Ø 25 mm cylindrical with key A8 x 7 x 32
  • oval flange 2-hole SAE A
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
260,03 EUR
222,25 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
222,25 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S RK250CD
Hydraulic Motor M+S RK250CD
  • hydraulic motor RK250CD by M+S
  • displacement: 250 ccm/REV
  • ports: G 1/2’’
  • shaft: Ø 25 mm cylindrical with key A8 x 7 x 32
  • oval flange 2-hole SAE A
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
266,65 EUR
227,91 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
227,91 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S RK315CD
Hydraulic Motor M+S RK315CD
  • hydraulic motor RK315CD by M+S
  • displacement: 315 ccm/REV
  • ports: G 1/2’’
  • shaft: Ø 25 mm cylindrical with key A8 x 7 x 32
  • oval flange 2-hole SAE A
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
273,35 EUR
233,63 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
233,63 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S RK400CD
Hydraulic Motor M+S RK400CD
  • hydraulic motor RK400CD by M+S
  • displacement: 400 ccm/REV
  • ports: G 1/2’’
  • shaft: Ø 25 mm cylindrical with key A8 x 7 x 32
  • oval flange 2-hole SAE A
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
284,40 EUR
243,08 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
243,08 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR50COD
Hydraulic Motor M+S MR50COD
  • hydraulic motor MR50COD by M+S
  • displacement: 50 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
234,36 EUR
200,31 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
200,31 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR80COD
Hydraulic Motor M+S MR80COD
  • hydraulic motor MR80COD by M+S
  • displacement: 80 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
240,91 EUR
205,91 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
205,91 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR100COD
Hydraulic Motor M+S MR100COD
  • hydraulic motor MR100COD by M+S
  • displacement: 100 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
245,26 EUR
209,62 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
209,62 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR125COD
Hydraulic Motor M+S MR125COD
  • hydraulic motor MR125COD by M+S
  • displacement: 125 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
251,87 EUR
215,27 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
215,27 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR160COD
Hydraulic Motor M+S MR160COD
  • hydraulic motor MR160COD by M+S
  • displacement: 160 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
258,42 EUR
220,87 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
220,87 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR200COD
Hydraulic Motor M+S MR200COD
  • hydraulic motor MR200COD by M+S
  • displacement: 200 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
267,10 EUR
228,29 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
228,29 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR250COD
Hydraulic Motor M+S MR250COD
  • hydraulic motor MR250COD by M+S
  • displacement: 250 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
273,66 EUR
233,90 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
233,90 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR315COD
Hydraulic Motor M+S MR315COD
  • hydraulic motor MR315COD by M+S
  • displacement: 315 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
280,20 EUR
239,49 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
239,49 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR400COD
Hydraulic Motor M+S MR400COD
  • hydraulic motor MR400COD by M+S
  • displacement: 400 ccm/REV
  • ports (side): G 1/2’’
  • shaft: Ø 1’’ cylindrical with key ¼’’ x ¼’’ x 1 ¼’’
  • oval flange 2-hole SAE A
  • spool valve type
  • internal check valve
  • with high pressure seal kit
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
291,13 EUR
248,83 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
248,83 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR50SHD
Hydraulic Motor M+S MR50SHD
  • hydraulic motor MR50SHD by M+S
  • displacement: 50 ccm/REV
  • ports (side): G 1/2’’
  • shaft:  Ø 25,32 mm splined (SAE 6B)
  • oval flange 2-hole SAE A
  • spool valve type
  • with high pressure seal kit
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
238,79 EUR
204,09 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
204,09 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR80SHD
Hydraulic Motor M+S MR80SHD
  • hydraulic motor MR80SHD by M+S
  • displacement: 80 ccm/REV
  • ports (side): G 1/2’’
  • shaft:  Ø 25,32 mm splined (SAE 6B)
  • oval flange 2-hole SAE A
  • spool valve type
  • with high pressure seal kit
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
245,34 EUR
209,69 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
209,69 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MR100SHD
Hydraulic Motor M+S MR100SHD
  • hydraulic motor MR100SHD by M+S
  • displacement: 100 ccm/REV
  • ports (side): G 1/2’’
  • shaft:  Ø 25,32 mm splined (SAE 6B)
  • oval flange 2-hole SAE A
  • spool valve type
  • with high pressure seal kit
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
249,68 EUR
213,40 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
213,40 EUR excl. 17% tax
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Ideal for conveyors, mechanical engineering, agriculture, and many other sectors, they stand out for their durability and efficient operation.

 

MR Series Hydraulic Motors - Frequently Asked Questions

What are the main features of MR hydraulic motors?

MR hydraulic motors are spool valve, roller gerotor motors with the following features:

  • Various mounting options: flange mounting, motors with needle bearings
  • Port types: side and rear ports
  • Shaft types: straight, splined, tapered
  • Shaft seals for high and low pressure
  • Compatibility with metric and BSPP ports
  • Option for speed sensing and other special functions

What applications are MR hydraulic motors typically suited for?

  • Conveyors
  • Feed mechanisms in robots and manipulators
  • Metalworking machines
  • Textile machines
  • Food industry
  • Agricultural machinery
  • Lawnmowers

What operating fluids and filtration requirements apply to MR hydraulic motors?

  • Recommended: mineral oil-based HLP (DIN 51524) or HM (ISO 6743/4)
  • For synthetic oils: consult manufacturer regarding seal material
  • Optimal viscosity: 20–75 mm²/s at 50°C
  • Minimum viscosity: 13 mm²/s at 50°C
  • Filtration: ISO 20/16 (25 µm or finer)

What are the maximum and minimum operating parameters?

  • Displacement: up to 397 cm³/rev
  • Speed: up to 970 RPM (continuous), 1150 RPM (intermittent) – small models
  • Torque: up to 75 daNm continuous, 97 daNm intermittent
  • Power: up to 15 kW
  • Pressure drop: up to 200 bar (continuous), 225 bar (intermittent)
  • Minimum speed: 10 RPM
  • Max. system temperature: 82°C

What precautions apply to intermittent and peak loads?

  • Intermittent: max. 6 sec. per minute
  • Peak load: max. 0.6 sec. per minute
  • Do not apply intermittent speed and pressure simultaneously
  • Before operation: fill motor with oil and run for 10–15 minutes at moderate load

What shaft options and torque capacities are available?

  • C: Ø25 mm straight, key A8x7x32 DIN 6885 – 34 daNm
  • CO: Ø1" straight, key ¼"x¼"x1¼" BS46 – 34 daNm
  • SH: Splined SAE 6B – 40 daNm
  • K: Tapered 1:10 – 40 daNm
  • SA: Splined DIN 5482 B25x22h9 – 40 daNm
  • CB: Ø32 mm straight – 77 daNm
  • KB: Tapered 1:10 – 77 daNm
  • SB: Splined DIN 5482 A25x22xH10 – 34 daNm
  • HB: 1¼" splined 14T ANSI B92.1 – 77 daNm
  • OB: Tapered 1:8 SAEJ 501 – 77 daNm

The allowable output torque must not be exceeded.

What mounting and port options are available?

  • Mounting: oval (2/4-bolt) or square (4-bolt)
  • Ports: side or rear ports
  • Threads: BSPP (ISO 228) or metric (ISO 262)
  • Case drain: optional (with or without)