Eaton S Series Geroler Motor
The Char-Lynn S Series is a versatile geroler orbital motor, redesigned with optimised geroler geometry for enhanced performance in the same compact package as the original. Precision-machined rollers in the outer ring give rolling contact between star and ring, lifting mechanical efficiency — especially at start-up and low speeds — while delivering reliable, leak-free running.
Available in ten displacements from 59 to 372 cc, the S Series handles continuous flows up to 57 L/min and pressures up to 135 bar continuous (170 bar intermittent), with speeds up to 963 rpm.
Key features
- Constant-clearance geroler design with just three moving components
- Optimised drive running angle for smoother low-speed operation
- Three-zone pressure design (inlet, return and case)
- Upgraded steel end cap and O-ring section seals for leak-free performance
- Wide choice of displacements, shafts and mounts
- Special options available to suit your application
Typical applications
Agricultural augers, harvesters and seeders, conveyors, car wash brushes, food processing, turf equipment, industrial sweepers, saw mills, concrete and asphalt gear, and skid steer attachments.
Stocked and supported locally — talk to our team for the right S Series configuration. Enquire today.
| Base Model | Description | cm³/rev | Max. speed @ Max. intermittent flow (rev/min) | Max Pressure (bar) | Max Cont Torque (Nm) | Max Cont Oil Flow (l/min) | Power (KW) |
| S-59 | Eaton S Series Geroler Orbital Motor | 59 | 963 | 172 | 115 | 57 | |
| S-75 | Eaton S Series Geroler Orbital Motor | 75 | 792 | 172 | 150 | 57 | |
| S-93 | Eaton S Series Geroler Orbital Motor | 93 | 607 | 172 | 183 | 57 | |
| S-120 | Eaton S Series Geroler Orbital Motor | 120 | 472 | 172 | 237 | 57 | |
| S-144 | Eaton S Series Geroler Orbital Motor | 144 | 394 | 162 | 265 | 57 | |
| S-166 | Eaton S Series Geroler Orbital Motor | 166 | 343 | 159 | 301 | 57 | |
| S-187 | Eaton S Series Geroler Orbital Motor | 187 | 304 | 155 | 333 | 57 | |
| S-225 | Eaton S Series Geroler Orbital Motor | 225 | 253 | 141 | 372 | 57 | |
| S-298 | Eaton S Series Geroler Orbital Motor | 298 | 190 | 124 | 491 | 57 | |
| S-372 | Eaton S Series Geroler Orbital Motor | 372 | 153 | 103 | 528 | 57 |
