Offset helical gear unit: The slim black wonder.
The offset helical gear units of the F series have a lot to offer. They feature an extremely space-saving design, a large axial distance, high positioning accuracy, and high efficiency.
- Compact, space-saving and absolutely powerful
- For high demands on efficiency, ruggedness and service life
- High positioning accuracy and backlash stability
Due to the extremely flat housing of this series and the large axial distance, offset helical gear units are perfect for integration in applications that have very tight, difficult space constraints.
Another plus is that offset helical gear units are extremely fast and easy to assemble.
Due to their design, offset helical gear units belong to the helical gear unit family. Therefore, their advantages clearly lie in their high efficiency.
The high-quality helical gearing of the spur-gears also guarantees exceptionally smooth operation.
Due to the nature of their rugged housing, offset helical gear units also run with extreme reliability and fail-safe performance. This also makes them suitable for continuous operation.
To meet higher precision requirements, the F series offset helical gear units are available in two backlash classes. The hardened helical gearing ensures reliable backlash stability.
F gear units are either available as compact servo, Lean or asynchronous offset helical geared motors or they can be attached to all common synchronous servo motors by suitable adapters.
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- Total ratio: 4.3 – 552
- Allowed acceleration torque: 53 – 1100 Nm
- Backlash: 5 – 11 arcmin
- Efficiency: 96 – 97%
Find your right fit!
- Shaft:
- Solid shaft with or without a feather key
- Hollow shaft with keyway or shrink ring
- Housing:
- Pitch circle diameter with optional side fastening
- Round or square flange
- Backlash: Standard or class II
- Mounting position: Any
- Lubricants and maintenance:
- Mineral lubricant CLP ISO VG 220 or synthetic lubricant CLP HC ISO VG 220
- Lubricated for life and maintenance-free
- Paint: RAL 9005 Jet black
- Motor adapter:
- EasyAdapt (ME) with clamp coupling
- ServoStop (MB) with plug-in coupling (jaw coupling) and integrated spring-loaded brake
We get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn more| Title | Version | ID | Date | Language | Size / Type | |
 | Catalog STOBER compact | 04 | 442655 | 2022 10 | EN | 10.24 MB |
 | Catalog Synchronous servo geared motors EZ | 11 | 442437 | 2022 05 | EN | 25.74 MB |
 | Catalog ServoStop servo gear units with brake | 01 | 443234 | 2022 03 | EN | 12.67 MB |
 | Catalog servo gear units | 04 | 443054 | 2021 12 | EN | 15.18 MB |
| Title | Version | ID | Date | Language | Size / Type | |
 | Mounting instructions Hollow shafts with shrink disk for F K KL KS S gear units | 11 | 440711 | 2023 02 | EN | 1.28 MB |
 | Mounting instructions Rubber buffers for the torque arm on the F gear unit | 01 | 442699 | 2023 01 | EN | 205.65 KB |
 | Operating manual MB23 - MB53 ServoStop Motor adapter with brake | 01 | 443287 | 2022 11 | EN | 6.00 MB |
 | Safety instructions for gear units | 00 | 443108 | 2018 07 | EN | 70.76 KB |
 | Safety instructions for explosion-proof gear units | 00 | 443109 | 2018 07 | EN | 69.50 KB |
 | Operating manual EZ EZHD EZHP EZS EZM synchronous servo motors | 01 | 443032 | 2019 05 | EN | 441.75 KB |
 | Operating manual Gear units and geared motors C F K S | 02 | 443027 | 2020 11 | EN | 288.54 KB |
 | Assembly instruction Mounting the motor to a servo gear unit with ME MEL MF MFL ME10-ME50 adapter | 02 | 443161 | 2021 05 | EN | 128.39 KB |
 | Assembly instructions Motor adapter with axially plug-in coupling | 08 | 441247 | 2011 02 | EN | 95.31 KB |
 | Assembly instructions MGS motor adapter with curved-toothed coupling | 04 | 440703 | 2009 05 | EN | 83.66 KB |
| Title | Version | ID | Date | Language | Size / Type | |
 | UK declaration of conformity synchronous servo motors and synchronous servo geared motors EZ ED EK LM | 00 | 443297 | 2021 10 | EN | 71.46 KB |
 | EU declaration of conformity synchronous servo motors and synchronous geared motors ED EK EZ | 01 | 443089 | 2020 11 | EN | 37.12 KB |
 | EU Declaration of conformity synchron motors LM | 02 | 443082 | 2020 11 | EN | 39.12 KB |
 | UK declaration of incorporation gear units | 00 | 443299 | 2021 10 | EN | 74.12 KB |
 | Declaration of Incorporation gear units | 00 | 442718 | 2015 04 | EN | 48.83 KB |
Take advantage of the expertise of our application engineers in the Sales Centers or contact our first level support.
OPENsystemsupport@stoeber.de
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OPENSTOBER is present in over 40 countries worldwide with 12 locations and 80 service partners. No matter where, no matter when, we’re always at your service and on the move!
OPENDo you need competent help with replacement parts, replacement drives, repairs and retrofitting? Feel free to contact us! We also offer a 24-hour hotline for urgent cases.
OPENRugged gear units. Pleasant people.
“Our work together with STOBER has been going strong for many years. The price-performance ratio is good and the STOBER gear units are exceptionally robust. We have never had a problem with a drive and our contact person is always quick to help.”
– Achim Knupfer, Managing Director, ALFA TOOLS Spezialmaschinenfabrik GmbH
STOBER Product ID.
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More than offset helical gear units: This might also interest you
Are you looking for a compact, universally applicable gear unit? Made from one mold?
We recommend STOBER C series helical gear units.
Higher dynamics, lower weight, a very small installation space for the angular transmission of motion and forces. This is what the helical bevel gear units from the K, KL and KS series deliver!
Offset Helical Servo Geared Motors
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