V Groove Coated Roller with SMR105ZZ Bearings for Light Linear Guidance
This V-groove roller uses a polyurethane outer surface and two SMR105ZZ stainless steel miniature bearings. The V-shaped groove keeps the roller centered on matching rails or profiles, while the soft PU layer reduces metal-to-metal contact and running noise. It is designed for light-duty linear guiding and reciprocating motion in compact equipment.
The bearings measure 5 × 10 × 4 mm and are made of stainless steel for better moisture resistance than standard bearing steel. The double-bearing arrangement helps maintain stable rotation during repeated back-and-forth travel.
Practical Advantages
V-groove for reliable tracking on aluminum or steel profiles
Soft PU surface that lowers noise and surface wear
Compact size for tight installation spaces
Custom groove dimensions and PU hardness available
OEM production from drawings or samples
This roller is intended for light loads only. Actual capacity depends on speed, rail condition and duty cycle.
Where It Is Commonly Used
3D printer V-slot wheel systems
CNC router and laser engraving guides
Labeling and packaging machinery
Small automation and positioning equipment
Inspection systems and light sliding mechanisms
Basic Specifications
| Item | Detail |
|---|---|
| Roller type | V-groove PU coated |
| Bearings | 2 × SMR105ZZ stainless |
| Bearing size | 5 × 10 × 4 mm |
| Outer material | Polyurethane |
| Groove type | V-groove |
| Duty | Light linear guiding |
| Customization | Hardness, groove size, diameter |
Hot Search Terms
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Popular Questions and Answers
1. How does the PU coating affect long-term wear on aluminum V-slot rails?
The soft polyurethane surface reduces direct metal contact and abrasion on the rail. Under light loads and normal speeds it usually lasts longer than an all-metal wheel and leaves fewer marks on the profile.
2. What is the real difference between SMR105ZZ and a standard 105ZZ bearing in this application?
SMR105ZZ is stainless steel, so it resists moisture and mild corrosion better. Standard 105ZZ is typically chrome steel and can rust faster in humid environments. The size and load rating are essentially the same.
3. Can these rollers be used in humid or outdoor environments without extra sealing?
The stainless bearings give better corrosion resistance than standard steel, but the roller is not fully sealed. For continuous outdoor or high-humidity use, additional protection or a sealed bearing option is recommended.
4. How much quieter are they compared with all-metal V-groove wheels under continuous motion?
Most users notice a clear drop in running noise because the PU surface absorbs vibration and eliminates hard metal-on-metal contact. Exact reduction depends on speed and rail condition, but the difference is usually noticeable in quiet workshops.
5. What is the standard groove angle, and how far can it be changed for special profiles?
Common angles are 90° or close to the matching rail profile. Groove angle, width and depth can all be adjusted according to the customer's drawing or sample.
6. Are they suitable for continuous high-speed reciprocating movement, or mainly moderate speeds?
They work best at moderate speeds under light loads. Continuous high-speed reciprocating motion is possible if the load stays well within the light-duty range and the rails are clean and straight.
7. How should I choose PU hardness when running on plastic rails versus aluminum rails?
Softer grades (around Shore 70A–80A) are often preferred for plastic rails to avoid marking. Harder grades (80A–90A) give better wear resistance on aluminum profiles. Final choice depends on load and speed.
8. What is a realistic lead time when the groove dimensions need to be fully custom?
Small sample batches for testing usually take 7–15 days after drawing confirmation. Full production lead time depends on quantity and complexity, but is normally confirmed with the order.
Custom Orders
Groove width, angle, roller diameter and PU hardness can all be adjusted. Small sample batches are available for testing before full production. Inspection of dimensions and bearing rotation is standard before shipment.
Product page:
https://www.blhbearing.com/rollers-for-sliding-doors/v-groove-pulley/v-groove-coated-roller-with-smr105zz-bearings.html
Send a drawing or sample if you need a specific groove size or hardness.
