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LFR Support Roller Bearing
LFR Support Roller Bearing Introduction:
LFR support roller bearing has U groove on outer ring. It belongs to double row angular contact ball bearing.
For this series bearing,
- Support roller bearings are made of high-quality bearing steel or stainless steel, processed by heat treatment and precision grinding, and filled with long-life, high-quality, multi-purpose grease.
- LFR series guide rail roller bearings are the most widely used, economical and practical products among linear guide rollers. They can be adapted to cylindrical guide rails with stable operation, small error, extremely low operating noise and high operating speed.
- The contact between the roller and the guide rail is two-point 60-degree contact, which has good contact performance and low running resistance, so as to achieve a relatively long service life.
- The roller adopts the internal structure design of double row angular contact ball bearing and the thickened outer ring, so that the roller has a higher load carrying capacity.
The roller bearing is equipped with an eccentric wheel and a concentric shaft and is easy to install. - Dust-proof roller adopts metal dust cover (KDD) or rubber sealing cover (NPP).
Bearing Features:
1. High speed, low resistance, long life
2. Simple and convenient installation
3. Smooth operation, small error, and extremely low operating noise
Structure:

LFR Series Support Roller Bearings Size Chart:
| Bearing Model | Mass(g) | Dimensions(mm) | ||||||
| dw | d | D | C | B | A | rs | ||
| LFR50/4NPP | 3.5 | 5 | 4 | 13 | 6 | 7 | 8.04 | 0.2 |
| LFR50/5-4KDD | 7.5 | 4 | 5 | 16 | 7 | 8 | 9 | 0.2 |
| LFR50/5-4NPP | 7.5 | 4 | 5 | 16 | 7 | 8 | 9 | 0.2 |
| LFR50/5KDD | 8 | 6 | 5 | 17 | 7 | 8 | 10.5 | 0.2 |
| LFR50/5NPP | 8 | 6 | 5 | 17 | 7 | 8 | 10.5 | 0.2 |
| LFR50/8KDD | 24 | 6 | 8 | 24 | 11 | 11 | 14 | 0.3 |
| LFR50/8NPP | 24 | 6 | 8 | 24 | 11 | 11 | 14 | 0.3 |
| LFR50/8-8KDD | 24 | 8 | 8 | 24 | 11 | 11 | 14.75 | 0.3 |
| LFR50/8-8NPP | 24 | 8 | 8 | 24 | 11 | 11 | 14.75 | 0.3 |
| LFR30/8KDD | 31 | 10 | 8 | 26.8 | 11 | 13 | 16.7 | 0.3 |
| LFR30/8NPP | 31 | 10 | 8 | 26.8 | 11 | 13 | 16.7 | 0.3 |
| LFR5201KDD | 68 | 10 | 12 | 35 | 15.9 | 15.9 | 20.65 | 0.3 |
| LFR5201NPP | 68 | 10 | 12 | 35 | 15.9 | 15.9 | 20.65 | 0.3 |
| LFR5301KDD | 130 | 10 | 12 | 42 | 19 | 19 | 24 | 0.6 |
| LFR5301NPP | 130 | 10 | 12 | 42 | 19 | 19 | 24 | 0.6 |
| LFR5301-20KDD | 125 | 20 | 12 | 42 | 19 | 19 | 28 | 0.6 |
| LFR5301-20NPP | 125 | 20 | 12 | 42 | 19 | 19 | 28 | 0.6 |
| LFR5302KDD | 163 | 10 | 15 | 47 | 19 | 19 | 26.65 | 1 |
| LFR5302NPP | 163 | 10 | 15 | 47 | 19 | 19 | 26.65 | 1 |
| LFR5201-12KDD | 68 | 12 | 12 | 35 | 15.9 | 15.9 | 21.75 | 0.3 |
| LFR5201-12NPP | 68 | 12 | 12 | 35 | 15.9 | 15.9 | 21.75 | 0.3 |
| LFR5201-14KDD | 107 | 14 | 12 | 39.9 | 18 | 20 | 24 | 0.3 |
| LFR5201-14NPP | 107 | 14 | 12 | 39.9 | 18 | 20 | 24 | 0.3 |
| LFR5201-10.4KDD | 115 | 10 | 12 | 39.9 | 18 | 20 | 22 | 0.3 |
| LFR5201-10.4NPP | 115 | 10 | 12 | 39.9 | 18 | 20 | 22 | 0.3 |
| LFR5204-16KDD | 195 | 16 | 20 | 52 | 20.6 | 22.6 | 31.5 | 0.6 |
| LFR5204-16NPP | 195 | 16 | 20 | 52 | 20.6 | 22.6 | 31.5 | 0.6 |
| LFR5206-20KDD | 435 | 20 | 25 | 72 | 23.8 | 25.8 | 41 | 0.6 |
| LFR5206-20NPP | 435 | 20 | 25 | 72 | 23.8 | 25.8 | 41 | 0.6 |
| LFR5206-25KDD | 425 | 25 | 25 | 72 | 23.8 | 25.8 | 43.5 | 0.6 |
| LFR5206-25NPP | 425 | 25 | 25 | 72 | 23.8 | 25.8 | 43.5 | 0.6 |
| LFR5207-30KDD | 660 | 30 | 30 | 80 | 27 | 29 | 51 | 1 |
| LFR5207-30NPP | 660 | 30 | 30 | 80 | 27 | 29 | 51 | 1 |
| LFR5208-40KDD | 1360 | 40 | 40 | 98 | 36 | 38 | 62.5 | 1 |
| LFR5208-41KDD | 1360 | 40 | 40 | 98 | 36 | 38 | 62.5 | 1 |
| LFR5208-42KDD | 1400 | 50 | 50 | 110 | 44 | 46 | 72.5 | 1.1 |
| LFR5208-43KDD | 1400 | 50 | 50 | 110 | 44 | 46 | 72.5 | 1.1 |
Questions that usually come up after LFR Support Roller Bearing
Which next options usually help after reviewing LFR Support Roller Bearing?
Most buyers benefit from one broader family destination, one more commercial route, and one supporting guide that answers the next practical question. That combination usually turns research into a clearer shortlist.
Why add related bearing destinations beside LFR Support Roller Bearing?
Because the first answer often leads to a second question about fit, applications, supplier choice, or repeat-order confidence. Keeping those next destinations close reduces unnecessary backtracking.
When is it worth moving from reading into a quote or product review?
That move usually makes sense once the topic has narrowed the likely bearing family and the remaining unknowns are commercial, dimensional, or application-specific rather than purely educational.
What usually makes the next bearing decision easier after LFR Support Roller Bearing?
The process is often easier when the wider family view, the more commercial destination, and one practical guide stay visible together. That keeps the decision grounded in both application detail and buying reality.
Buyer FAQ
Questions buyers ask before choosing the next bearing option
What is the main takeaway from LFR Support Roller Bearing?
The main takeaway is that lfr support roller bearing should be checked against the bearing family, dimensions, load direction, speed, and operating conditions instead of relying on the title or size alone.
When should I use this guide before requesting a quote?
Use the guide when you are comparing bearing models, checking suffix meanings, confirming seal or clearance choices, planning maintenance, or preparing details for replacement, production, or OEM sourcing.
How does this topic connect to bearing supply?
The topic supports the Bearing Supply decision path by helping buyers understand fit, performance, specification details, or maintenance factors before choosing a product page or contacting the team.
Can this guide replace a final specification check?
No. The guide helps prepare the decision, but a final check should still confirm the part number, dimensions, load, speed, seal, clearance, precision, application, and order quantity.
What should I send if I need help after reading this guide?
Send the bearing number, measured size, photos if available, application, quantity, and any special operating conditions. That gives the team enough context to recommend the right product family or quote route.
Need help checking fit, price, or lead time? Request a bearing quote