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When metal bearings introduce unwanted noise, rust risk, or electromagnetic interference into your build, you need a smarter alternative. Engineers, makers, and CNC hobbyists working on motion-sensitive assemblies rely on all-plastic linear shaft bearings to keep their systems running quietly and cleanly — without the maintenance headaches of steel.
These RLM-01 series nylon linear shaft bearings are machined from engineering-grade nylon (PA66 or equivalent), offering a self-lubricating, corrosion-resistant sliding surface. Available in bore sizes from 6 mm (0.24 in) to 30 mm (1.18 in), they are designed to fit standard metric linear shafts across the full RLM-01-06 through RLM-01-30 model range. Each unit is a single-piece all-plastic construction — no metal inserts, no rust, no conductivity.
Typical use cases include low-noise 3D printer Z-axis carriages, CNC router gantry slides requiring non-magnetic components, laboratory automation linear stages where corrosion resistance is critical, and DIY robotics joints needing lightweight reciprocating motion.
| Model Series | RLM-01 (RLM-01-06 / 08 / 10 / 12 / 16 / 20 / 25 / 30) |
|---|---|
| Material | Engineering-grade nylon (PA66 or equivalent) |
| Bore Diameter Range | 6 mm – 30 mm (0.24 in – 1.18 in) |
| Outer Diameter | See variant options |
| Overall Length | See variant options |
| Shaft Compatibility | Standard metric linear shafts (h6 tolerance recommended) |
| Construction | All-plastic, single-piece, no metal inserts |
| Lubrication | Self-lubricating (no external grease required) |
| Corrosion Resistance | Yes — moisture and mild chemical resistant |
| Conductivity | Non-conductive, non-magnetic |
| Color | See variant options |
| Units per Pack | 1 / 2 / 3 / 5 / 10 pcs (select above) |
| Weight per Unit | See variant options |
Match the model suffix to your shaft diameter: RLM-01-06 fits 6 mm shafts, RLM-01-08 fits 8 mm, RLM-01-10 fits 10 mm, RLM-01-12 fits 12 mm, RLM-01-16 fits 16 mm, RLM-01-20 fits 20 mm, RLM-01-25 fits 25 mm, and RLM-01-30 fits 30 mm. Always measure your shaft's actual diameter with calipers before ordering to confirm the fit.
These nylon linear bearings are well-suited for light-to-medium duty linear motion — such as 3D printer carriages, small CNC router gantries, and laboratory automation stages. For heavy-duty industrial loads or high-speed continuous duty cycles, consult the load rating for your specific model and compare against your application's requirements. Contact us to confirm suitability for demanding use cases.
No. The all-nylon construction means there are no metal components to oxidize. These bearings are inherently resistant to moisture and mild chemical exposure, making them a reliable choice for humid workshops, outdoor enclosures, or environments where condensation is a concern.
Yes. These bearings are compatible with both hardened steel and aluminum linear shafts of the corresponding diameter. For best performance and longevity, use shafts with an h6 or similar close tolerance finish. Rough or undersized shafts may cause uneven wear on the nylon bore surface.
Generally, no. Engineering-grade nylon has a naturally low coefficient of friction and is self-lubricating under normal operating conditions. In very high-cycle or high-speed applications, a light application of dry PTFE lubricant can extend service life, but oil or grease is typically not required and may attract dust.
Yes — this is one of the key advantages of all-plastic linear bearings. The nylon body is fully non-conductive and non-magnetic, making these bearings safe to use in proximity to PCBs, Hall-effect sensors, encoders, and other sensitive electronic components without risk of interference or short circuits.
Each listing offers packs of 1, 2, 3, 5, or 10 pieces. Multi-pack options provide a lower per-unit cost compared to single-piece orders, making them ideal for prototyping multiple axes, stocking spares, or outfitting a full machine build. Select your preferred quantity using the "Units (pcs)" option above.
