Oil-Free LM12 Plastic Linear Bearing For 3D Printer
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Lead Time–If you finish the payment today, your order will ship out within the delivery date.
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Quantity(Pieces) 1 – 2000 >2000 Est. Time(days) 3 To be negotiated
- Customization:
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Customized logo(Min. Order: 100 Pieces)Customized packaging(Min. Order: 100 Pieces)
Oil-Free LM12 Plastic Linear Bearing For 3D Printer
Plastic linear bearings are a kind of linear motion system with self-lubricating characteristics. The biggest difference from metal linear bearings is that metal linear bearings have rolling friction, and the bearing and cylindrical shaft are in point contact, so this is suitable for low-load and high-speed motion; Plastic linear bearings are sliding friction, and there is surface contact between the bearing and the cylindrical shaft, so this type is suitable for high-load, low-speed movement.
Plastic linear bearings have no special requirements for matching shafts; they can withstand greater loads than metal bearings, but because the movement between the bearing and the shaft is sliding friction, the speed of plastic linear bearings is limited to a certain extent; the movement resistance is higher than that of metal linear bearings. The bearing is larger; but its motion noise is lower than that of metal linear bearings, especially in the case of medium and high speed, the influence of the noise of plastic linear bearings with speed is very small. Plastic linear bearings have a chip groove design inside, so they are allowed to be used in places with heavy dust. The dust will automatically be brought out of the friction surface of the bearing body from the chip groove during movement; plastic linear bearings are also allowed to be used during use It can even be used for long-term operation in liquids for cleaning.
The overall dimensions are exactly the same as ordinary linear bearings
Features: All plastic structure, easy to maintain, can be used in liquid, dusty occasions
advantage: No jamming, corrosion resistance, dust resistance, abrasion resistance, waterproof,Lubrication-free, light weight, low noise, non-magnetic, insulated
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Model
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Inner Diameter
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Outer Diameter
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Length
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LM12
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12mm / 0.47in
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20mm / 0.79in
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30mm / 1.18in
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LM16
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16mm / 0.63in
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28mm / 1.1in
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37mm / 1.46in
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LM20
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20mm / 0.79in
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32mm / 1.26in
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42mm / 1.65in
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LM25
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25mm / 0.98in
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40mm / 1.57in
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59mm / 2.32in
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LM30
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30mm / 1.18in
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45mm / 1.77in
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64mm / 2.52in
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is a professional bearing manufacturer and dealer in china.We have been engaged in bearing industry for 10 years and made international trade of bearing import and export for more than 8 years.We have our own brand “TFL” and applied ISO9001:2000 certificate for certification authority.We attend international bearing fairs, put in many B2B website and achieve many customers all over the world also bulid up good reputation from our customers.
Our company is specialized in ball bearing,roller bearing,housing units, wheel hub bearing,bearing parts and accessories, cross roller bearing.Also we can customize various large non-standard products such as the most competitive products according to customers’ demands.
FAQ1: Plastic Linear Bearings vs. Metal Linear Bearings
| Feature | Metal Ball Bearings (LM12UU) | Plastic Bearings (LM12) |
| Noise | Noisy (metal-on-metal) | Very Quiet (sliding) |
| Maintenance | Needs regular greasing | Maintenance-free |
| Friction | Very low (at high loads) | Low (at light loads) |
| Precision | High (very tight fit) | Good (but can have more “play”) |
| Vibration | Transmits vibration | Dampens vibration |
FAQ2: Why Use Oil-Free Bearings for 3D Printers?
Standard metal bearings require grease, which creates several problems in 3D printing:
No Contamination: Oil-free bearings won’t leak grease onto your printed parts or the print bed.
Dust Resistance: Grease acts like a “magnet” for dust and filament bits. Plastic bearings stay clean because they are dry.
Smooth Travel: They eliminate the “clicking” or “scratching” feel sometimes found in cheap ball bearings.
