Wittenstein SP100S-MF2-20-1G1-2S – SP+ 100 Two-Stage Planetary Gearbox, Ratio 20:1
The Wittenstein SP100S-MF2-20-1G1-2S is a two-stage, low-backlash planetary gearbox from the WITTENSTEIN alpha SP+ range, size 100. It is the MF version for cyclic operation, with a 20:1 ratio, standard backlash and a 24 mm clamping hub for direct servo motor mounting.
SP+ gearboxes use helical toothing and tapered roller output bearings, and they are lubricated for life. This makes the SP+ 100 a robust, precise choice for servo axes in machine tools, automation and handling systems.
What the Part Number Means
- SP – WITTENSTEIN alpha SP+ precision planetary gearbox
- 100 – Gearbox size 100
- S – Standard version
- MF – SP+ standard version, motor-mounted, for cyclic operation
- 2 – Two-stage
- 20 – Ratio i = 20
- 1 – Standard backlash
- G – Clamping hub bore Ø 24 mm
- 1-2S – Output and design options
Key Features
- Ratio: 20:1, two stages
- Torque: max. acceleration torque 315 Nm, nominal output torque 180 Nm
- Low backlash: ≤ 5 arcmin, standard 2-stage
- Torsional rigidity: 31 Nm/arcmin
- Efficiency: 94%
- Clamping hub: Ø 24 mm, for direct mounting of the servo motor
- Protection and lubrication: IP65, lubricated for life
Key Specifications (WITTENSTEIN alpha SP+ 100 MF, 2-stage, i = 20)
Torque and Speed
- Ratio: i = 20
- Max. acceleration torque T2B: 315 Nm
- Nominal output torque T2N: 180 Nm
- Emergency stop torque T2Not: 625 Nm
- Nominal input speed n1N: 3,100 min⁻¹
- Max. input speed n1Max: 6,000 min⁻¹
- Mean no-load running torque T012: 1.2 Nm
Precision and Mechanics
- Max. torsional backlash: ≤ 5 arcmin (standard)
- Torsional rigidity Ct21: 31 Nm/arcmin
- Max. axial force F2AMax: 5,650 N
- Max. radial force F2RMax: 6,600 N
- Max. tilting moment M2KMax: 487 Nm
- Efficiency at full load: 94%
- Service life: > 20,000 h
General Data
- Clamping hub bore: Ø 24 mm (code G)
- Mass moment of inertia J1 (hub G 24): 2.07 kgcm²
- Operating noise: ≤ 60 dB(A)
- Weight: approx. 7.9 kg (incl. standard adapter plate)
- Lubrication: lubricated for life
- Degree of protection: IP65
- Max. housing temperature: +90 °C
- Ambient temperature: -15 °C to +40 °C
Typical Applications
- Precision servo axes in machine tools and automation
- Handling systems, gantries and robotics
- Packaging, printing and converting machinery
- Direct replacement of SP100S-MF2-20-1G1-2S gearboxes in existing machines
Buy the Wittenstein SP100S-MF2-20-1G1-2S from Atlantech Drives
Atlantech Drives supplies the Wittenstein SP100S-MF2-20-1G1-2S 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 SP100S-SF1-10-011-2
- Wittenstein SP140S-MF2-28-0K1-2S
- Wittenstein SP075S-MF2-16-0E1-2S
- All Wittenstein products
Manufacturer website: WITTENSTEIN
Keyword Synonyms
- SP100S-MF2-20-1G1-2S / SP 100S-MF2-20-1G1-2S / SP100SMF2201G12S
- Wittenstein SP+ 100 gearbox ratio 20
- Wittenstein alpha SP 100 planetary gearbox 20:1
- Wittenstein SP+ 100 two-stage gearhead, 24 mm clamping hub
- WITTENSTEIN alpha servo gearbox size 100
- Wittenstein low-backlash planetary gear reducer 20:1
- Wittenstein Planetengetriebe SP100S-MF2-20-1G1-2S / Servogetriebe SP+ 100 i=20
