Wittenstein SP140S-MF1-7-1G1-2S – SP+ 140 Planetary Gearbox, Ratio 7:1
The Wittenstein SP140S-MF1-7-1G1-2S is a single-stage, low-backlash planetary gearbox from the WITTENSTEIN alpha SP+ range, size 140. It is the MF version for cyclic operation, with these main characteristics:
- 7:1 ratio
- standard backlash (≤ 3 arcmin)
- 24 mm clamping hub for direct servo motor mounting
- 660 Nm maximum acceleration torque
SP+ gearboxes use helical toothing and tapered roller output bearings, and they are lubricated for life. This makes the SP+ 140 a robust, precise choice for heavy servo axes in machine tools and automation.
What the Part Number Means
- SP – WITTENSTEIN alpha SP+ precision planetary gearbox
- 140 – Gearbox size 140
- S – Standard version
- MF – SP+ standard version, motor-mounted, for cyclic operation
- 1 – Single-stage
- 7 – Ratio i = 7
- 1 – Standard backlash
- G – Clamping hub bore Ø 24 mm
- 1-2S – Output and design options
Key Features
- Ratio: 7:1, single stage
- High torque: max. acceleration torque 660 Nm, nominal output torque 360 Nm
- Low backlash: ≤ 3 arcmin (standard)
- Torsional rigidity: 53 Nm/arcmin
- Efficiency: 97%
- Clamping hub: Ø 24 mm, for direct mounting of the servo motor
- Protection and maintenance: IP65, lubricated for life
Key Specifications (WITTENSTEIN alpha SP+ 140 MF, 1-stage, i = 7)
Torque and Speed
- Ratio: i = 7
- Max. acceleration torque T2B: 660 Nm
- Nominal output torque T2N: 360 Nm
- Emergency stop torque T2Not: 1,250 Nm
- Nominal input speed n1N: 2,600 min⁻¹
- Max. input speed n1Max: 4,000 min⁻¹
- Mean no-load running torque T012: 3.4 Nm
Precision and Mechanics
- Max. torsional backlash: ≤ 3 arcmin (standard)
- Torsional rigidity Ct21: 53 Nm/arcmin
- Max. axial force F2AMax: 9,870 N
- Max. radial force F2RMax: 9,900 N
- Max. tilting moment M2KMax: 952 Nm
- Efficiency at full load: 97%
- Service life: > 20,000 h
General Data
- Clamping hub bore: Ø 24 mm (code G)
- Mass moment of inertia J1 (hub G 24): 5.84 kgcm²
- Weight: approx. 17.2 kg (incl. standard adapter plate)
- Lubrication: lubricated for life
- Degree of protection: IP65
Typical Applications
- Heavy-duty, high-precision servo axes in machine tools
- Rotary tables, gantries and large handling systems
- Press feeders, packaging and converting machinery
- Direct replacement of SP140S-MF1-7-1G1-2S gearboxes in existing machines
Buy the Wittenstein SP140S-MF1-7-1G1-2S from Atlantech Drives
Atlantech Drives supplies the Wittenstein SP140S-MF1-7-1G1-2S with fast worldwide shipping and a 12-month warranty. Our experienced sales team can also quote other WITTENSTEIN alpha SP+, TP+, XP+, CP and NP gearboxes. Request a quote today for price and availability.
More Wittenstein Products
- Wittenstein SP140S-MF1-5 -0K0-2S
- Wittenstein SP140S-MF2-28-0K1-2S
- Wittenstein SP180S-MF2-16 -1K1-2S
- All Wittenstein products
Manufacturer website: WITTENSTEIN
Keyword Synonyms
- SP140S-MF1-7-1G1-2S / SP 140S-MF1-7-1G1-2S / SP140SMF171G12S
- Wittenstein SP+ 140 gearbox ratio 7
- Wittenstein alpha SP 140 planetary gearbox 7:1
- Wittenstein SP+ 140 gearhead, 24 mm clamping hub
- WITTENSTEIN alpha servo gearbox size 140
- Wittenstein low-backlash planetary gear reducer 7:1
- Wittenstein Planetengetriebe SP140S-MF1-7-1G1-2S / Servogetriebe SP+ 140 i=7
