Hydraulic Motors M+S, Type MM

MM hydraulic motors offer precise performance, high reliability, and flexible configuration options for a wide range of industrial applications. Featuring a spool valve Gerotor design, optional pressure relief valves, various shaft and port configurations, and compact dimensions, they are ideal for conveyors, mechanical engineering, textile machinery, and construction equipment. Learn more...

Filter
Displacement
Mounting flange
Output Shaft
Connection Ports
Failed to retrieve the available filter values!
Picture1 Hydraulic Motor M+S MM8C
Hydraulic Motor M+S MM8C
  • hydraulic motor MM8C by M+S
  • displacement: 8 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
154,23 EUR
131,82 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
131,82 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM12.5C
Hydraulic Motor M+S MM12.5C
  • hydraulic motor MM12.5C by M+S
  • displacement: 12.5 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
156,82 EUR
134,03 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
134,03 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM20C
Hydraulic Motor M+S MM20C
  • hydraulic motor MM20C by M+S
  • displacement: 20 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
159,41 EUR
136,25 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
136,25 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM32C
Hydraulic Motor M+S MM32C
  • hydraulic motor MM32C by M+S
  • displacement: 32 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
162,00 EUR
138,46 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
138,46 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM40C
Hydraulic Motor M+S MM40C
  • hydraulic motor MM40C by M+S
  • displacement: 40 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
173,16 EUR
148,00 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
148,00 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM50C
Hydraulic Motor M+S MM50C
  • hydraulic motor MM50C by M+S
  • displacement: 50 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
193,66 EUR
165,52 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
165,52 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM8SH
Hydraulic Motor M+S MM8SH
  • hydraulic motor MM8SH by M+S
  • displacement: 8 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16.5 mm splined, B17 x 14
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
158,55 EUR
135,51 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
135,51 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM12.5SH
Hydraulic Motor M+S MM12.5SH
  • hydraulic motor MM12.5SH by M+S
  • displacement: 12.5 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16.5 mm splined, B17 x 14
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
161,13 EUR
137,72 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
137,72 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM20SH
Hydraulic Motor M+S MM20SH
  • hydraulic motor MM20SH by M+S
  • displacement: 20 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16.5 mm splined, B17 x 14
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
163,72 EUR
139,93 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
139,93 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM32SH
Hydraulic Motor M+S MM32SH
  • hydraulic motor MM32SH by M+S
  • displacement: 32 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16.5 mm splined, B17 x 14
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
166,32 EUR
142,15 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
142,15 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM40SH
Hydraulic Motor M+S MM40SH
  • hydraulic motor MM40SH by M+S
  • displacement: 40 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16.5 mm splined, B17 x 14
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
177,47 EUR
151,68 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
151,68 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MM50SH
Hydraulic Motor M+S MM50SH
  • hydraulic motor MM50SH by M+S
  • displacement: 50 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16.5 mm splined, B17 x 14
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
197,98 EUR
169,21 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
169,21 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MMS8C
Hydraulic Motor M+S MMS8C
  • hydraulic motor MMS8C by M+S
  • displacement: 8 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
154,23 EUR
131,82 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
131,82 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MMS12.5C
Hydraulic Motor M+S MMS12.5C
  • hydraulic motor MMS12.5C by M+S
  • displacement: 12.5 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
156,82 EUR
134,03 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
134,03 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MMS20C
Hydraulic Motor M+S MMS20C
  • hydraulic motor MMS20C by M+S
  • displacement: 20 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
159,41 EUR
136,25 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
136,25 EUR excl. 17% tax
Picture1 Hydraulic Motor M+S MMS32C
Hydraulic Motor M+S MMS32C
  • hydraulic motor MMS32C by M+S
  • displacement: 32 ccm/REV
  • ports: G 3/8’’
  • shaft: Ø 16 mm cylindrical with key 5 x 5 x 16
  • selectable with or without flange
  • spool valve type
  • internal check valve
  • usage without drain line possible
  • OEM quality, made in Europe
  • optimised for small spaces
  • special variants available on request
162,00 EUR
138,46 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
138,46 EUR excl. 17% tax
1 to 16 (from a total of 24)

 

 

 

Thanks to their robust design, wide displacement range, and high efficiency, they are the perfect choice for durable and high-performance drives.

 

MM Series Hydraulic Motors – Frequently Asked Questions

What are the main application areas for MM hydraulic motors?

MM hydraulic motors are highly versatile and are used in various industrial sectors:

  • Conveyor systems
  • Textile machinery
  • Machine tools
  • Fans
  • Mining equipment
  • Construction machinery and work platforms

This diversity demonstrates the motors’ high adaptability to different operating conditions and requirements.

What types of MM hydraulic motors are available and what differentiates them?

The MM series includes several variants:

  • MM: Standard version, rear ports
  • MMS: Standard motors, side ports
  • MMP: Side ports with integrated internal pressure relief valve
  • MMD: Side ports with integrated internal dual pressure relief valves

The differences are mainly in the integrated functions and protective mechanisms for specific applications.

What information do the performance diagrams of MM motors provide?

The performance diagrams (e.g., for MM 8, MM 12.5, MM 20, MM 32, MM 40, MM 50) show:

  • Relationship between speed (RPM), torque (daNm/lb-in) and output power (kW)
  • Data for continuous and intermittent operation
  • Efficiency lines (e.g., 55%, 65%, 70%, 73%)
  • Performance under different pressure levels (30–140 bar)

This data assists in optimal motor selection for varying load and pressure conditions.

What options are available for MM hydraulic motors?

Various options are available for customization:

  • Spool valve and Gerotor design
  • Flange mounting or without flange
  • Side or rear ports
  • Integrated pressure relief valves (single or dual)
  • Various shaft designs (straight, splined)
  • Metric or BSPP ports
  • Options for speed sensing

What hydraulic fluids and operating parameters are recommended?

Recommendations for hydraulic oils:

  • Mineral oil-based type HLP (DIN 51524) or HM (ISO 6743/4)
  • Optimum viscosity: 20–75 mm²/s (98–347 SUS)
  • Minimum viscosity: 13 mm²/s (70 SUS) at 50°C
  • Filtration: ISO 20/16 (minimum 25 μm)
  • Max. operating temperature: 82°C

How is the permissible radial shaft load calculated?

Calculation based on distance L (mm or inches) between point of load application and mounting face:

  • Metric: Prad = 13040 / (61.5 + L) [daN]
  • Imperial: Prad = 1155 / (2.42 + L) [lbs]

Maximum L value: 80 mm (3.15 in). If calculated values are exceeded, a flexible coupling must be used.

What shaft extensions and torque limits are available?

  • Type C: Ø16 mm straight shaft, key 5x5x16 DIN 6885 – max. 3.9 daNm (345 lb-in)
  • Type CK: Ø14 mm straight shaft, key 5x5x16 DIN 6885 – max. 3 daNm (265 lb-in)
  • Type SH: Ø16.5 mm splined shaft B17x14 DIN 5482 – max. 4.4 daNm (390 lb-in)

These values must not be exceeded to prevent damage.

What mounting options and port types are available?

Mounting options:

  • Three-bolt mounting
  • Oval mounting plate (2-bolt)

Port options:

  • Rear ports (standard)
  • Side ports (S)
  • Side ports with single pressure relief valve (P)
  • Side ports with dual pressure relief valves (D)

Thread types: BSPP (ISO 228) or metric (ISO 262)

Standard rotation: A CW (clockwise) with pressure at port B, B CCW (counterclockwise) with pressure at port A. Reversal available on request.