AXK Series
Thrust needle roller design
Needle rollers are arranged between axial raceways for structures with limited axial installation space. The arrangement can work with corresponding thrust washers.
Discuss your AXK projectBearing structure
Thrust Bearing Cages
Plastic cages that separate and guide rolling elements in bearing arrangements carrying axial loads.
Application and design
AXK cages are used with thrust needle rollers. K811 and K812 cages are used with thrust cylindrical rollers. The cage layout must match the rolling elements, supporting washers and installation height.
Supply scope: Plastic cages only. Rolling elements, shaft or housing washers and complete thrust bearings are not included.
Compare series designs
K811 Series
Thrust cylindrical roller design
This cage is designed for cylindrical rollers rather than the needle rollers used by AXK. The confirmed cage material is PA66 with 25% glass fibre reinforcement (PA66-GF25).
Discuss your K811 project
K812 Series
Larger cylindrical roller section
Compared with K811 of the same size designation, K812 generally has a larger outside diameter and roller section. The confirmed cage material is also PA66-GF25.
Discuss your K812 projectMaterials & customisation
PA66-GF25 is documented for the K811 and K812 series. Material requirements for other thrust cage designs are reviewed separately, including temperature, dimensional stability and lubricant compatibility.
Choose from the nylon materials below for your cage design and operating conditions. The specific resin grade is agreed for the project.
| Material code | Material description |
|---|---|
| PA66 | Unreinforced polyamide 66 |
| PA66-GF10 | 10% glass-fibre-reinforced polyamide 66 |
| PA66-GF15 | 15% glass-fibre-reinforced polyamide 66 |
| PA66-GF25 | 25% glass-fibre-reinforced polyamide 66 |
| PA66-GF30 | 30% glass-fibre-reinforced polyamide 66 |
| PA46 | Unreinforced polyamide 46 |
| PA46-GF15 | 15% glass-fibre-reinforced polyamide 46 |
| PA46-GF25 | 25% glass-fibre-reinforced polyamide 46 |
| PA46-GF30 | 30% glass-fibre-reinforced polyamide 46 |
Typical raw-material property ranges
| Property | PA66 | PA46 |
|---|---|---|
| Densityg/cm³ | 1.13–1.36 | 1.18–1.41 |
| Tensile stress, dryMPa | 85–190 | 100–210 |
| Tensile modulus, dryGPa | 3.0–10.0 | 3.3–10.0 |
| Melting point, DSC°C | ≈260 | ≈295 |
| Heat deflection temperature°C · 1.8 MPa | 75–250 | 190–290 |
Ranges summarise the example resin grades below for initial material selection. Finished-part performance is reviewed for the selected grade and application. Tensile stress uses dry yield or break values. Continuous operating temperature is assessed separately for the grade and conditions.
Reference grades and manufacturer data
Design requirements
- Rolling-element type
- Specify needle rollers or cylindrical rollers and the intended thrust-bearing arrangement.
- Axial installation space
- Provide the inside and outside diameters, cage height, roller dimensions and pocket layout.
- Operating requirements
- Describe the load direction, speed, temperature, lubrication and assembly interfaces.
Custom development and project enquiries
Boerjing develops molds and manufactures precision injection-molded plastic parts from customer drawings or approved samples. We support mold trials, sample approval, small-batch validation and repeat production.
Start with the component and intended use. Share available drawings or samples, material requirements and expected quantities.