Ball bearings
Thrust Ball Bearings
Two flat washers and a set of balls take the load in one direction. The simplest way to locate a vertical shaft and carry it axially without imposing any radial constraint.
- Series
- 51100 · 51200 · 51300
- Bore
- 10 – 340 mm
- Class
- P5 / P4
Design
Axial location, without radial conflict.
Every batch is measured on the finished part, and the measurement file travels with the goods. Send a designation, a drawing or a photo of the failed part and an engineer will answer with a lead time and a price, usually inside 48 hours.
- Single or double directionOne shaft washer and one housing washer, or a second pair when the shaft must be located both ways.
- Axial only, by designNo radial location is imposed, so the bearing never fights a second support in the same shaft train.
- Ground and lapped racewaysWasher flatness and raceway runout are measured on the finished part, not assumed from the blank.
- Cage to suit the dutyPressed steel for standard running, machined brass where speed or temperature rules it out.
Technical data
51100 · 51200 · 51300| Designs | 51100 single direction · 51200 with spherical housing washer · 51300 heavy series · 51400 extra heavy |
|---|---|
| Bore range | 10 – 340 mm |
| Outer diameter | 24 – 500 mm |
| Height | 9 – 110 mm |
| Accuracy | P5 / P4 — dimensional and running accuracy to ISO |
| Cage | Pressed steel standard, machined brass on request |
| Axial clearance | Set to drawing; matched pairs supplied with a measured figure |
| Temperature | −30 to +120 °C standard, higher with special heat treatment |
Where it is used
Common applicationsScrew-down gear
Rolling-mill screwdowns where the screw carries pure thrust into a fixed housing.
Vertical pump shaft
Locating the rotor axially while the impeller load is taken by a separate radial support.
Turntable plate
Thrust plates under indexing tables and rotary fixtures.
Jacks and presses
Short-stroke axial loads at low speed, where a roller thrust design would be over-specified.
Send the part number.
We will send the answer.
A designation, a drawing, or a photo of the failed part is enough to start. Technical questions reach an engineer, not a mailbox.
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