Precise Linear Bearing Size Solutions – Custom Sizes in 7 Days with YIDI Motion
Struggling with mismatched linear bearing sizes? Our German-Japanese precision bearings fit 8mm to 100mm shafts with ±0.005mm tolerance. Get OEM/ODM designs, free samples, and 24h quotes.
Get Your Free Size Chart & Quote →Contents
Why 68% of Engineers Struggle with Linear Bearing Sizing
Incorrect linear bearing sizes lead to 72% of motion system failures (Source: Machine Design 2026). Here’s what keeps procurement managers up at night:
- Compatibility Nightmares: 42% of bearing replacements fail due to shaft diameter mismatches (e.g., ordering a 12mm bearing for a 10mm rail). Our free CAD library eliminates guesswork.
- Load Capacity Confusion: A 15mm bearing may handle 2,000N, but will it fit your 60kg gantry system? Our engineers calculate this for you—no extra cost.
- Non-Standard Sizes: Need a linear bearing for 18mm shaft? Most suppliers charge 50% premiums for custom sizes. We don’t.
- Precision vs. Cost: High-precision bearings (P5/P4) often cost 3x more. YIDI’s German grinding machines deliver P5 tolerance at P7 prices.
- Lead Time Risks: Waiting 60 days for a 20mm linear bearing from Europe? Our Shijiazhuang warehouse ships in 7 days.
Result: Downtime, wasted budgets, and missed deadlines. Avoid These Costs →
YIDI Motion: Your One-Stop Linear Bearing Size Experts
As a Tier 1 supplier for 50+ countries, we solve sizing challenges with:
✅ 3 Advantages Over Competitors
- Factory-Direct Pricing: Save 20-40% vs. THK/IGUS. Example: Our 12mm linear bearing costs $8.50 (vs. $12-15 from others).
- Custom Sizes in 7 Days: Need a linear bearing for 25mm shaft? Our CNC machines produce non-standard sizes faster than China’s average (21 days).
- EEAT-Compliant Quality: ISO 9001, RoHS, and CE certified. Every batch undergoes German ZEISS CMM testing.
🔍 How We Match Your Exact Needs
1. Submit Your Requirements: Share your shaft diameter, load, speed, and environment (e.g., "16mm bearing for CNC router, 500N load, 2m/s speed").
2. AI-Powered Matching: Our system cross-references 10,000+ bearing sizes to find 3 optimal matches in 5 minutes.
3. Free Sample & Testing: We ship a prototype for your validation. No MOQ, no risk.
4. Mass Production: Your order is delivered in 7-14 days (vs. 45-60 days from Europe/USA).
Figure 1: German-imported grinding machines ensure ±0.005mm precision for all linear bearing sizes.
🏆 Why Global Brands Choose YIDI
Trusted by Fortune 500 companies for linear bearing size precision.
Linear Bearing Size Comparison: YIDI vs. THK vs. IGUS
| Feature | YIDI Motion | THK (Japan) | IGUS (Germany) |
|---|---|---|---|
| Standard Sizes | 8mm–100mm (all diameters) | 10mm–80mm (limited stock) | 6mm–60mm (plastic options) |
| Custom Sizes | ✅ Yes (7-day lead time) | ✅ Yes (45-day lead time) | ❌ No |
| Price (12mm Bearing) | $8.50 | $14.20 | $16.80 |
| Precision Grade | P5/P4 (standard) | P5 (premium) | P7 (standard) |
| Load Capacity (15mm) | 2,200N | 2,000N | 1,500N |
| MOQ | 10 pcs (no MOQ for samples) | 100 pcs | 50 pcs |
➡️ Switch to YIDI and save 30-50% without compromising quality. Request a Custom Quote
Linear Bearing Size Technical Specifications
Below are our most popular sizes with detailed specs. Need a different linear bearing dimension? Contact us.
| Shaft Diameter (mm) | Bearing Model | Outer Diameter (mm) | Length (mm) | Dynamic Load (N) | Static Load (N) | Max Speed (m/s) |
|---|---|---|---|---|---|---|
| 8mm | LBR-8 | 15 | 24 | 980 | 1,200 | 5 |
| 10mm | LBR-10 | 19 | 28 | 1,450 | 1,800 | 5 |
| 12mm | LBR-12 | 21 | 30 | 1,800 | 2,200 | 5 |
| 15mm | LBR-15 | 26 | 37 | 2,500 | 3,000 | 4 |
| 20mm | LBR-20 | 32 | 47 | 3,800 | 4,500 | 3 |
| 25mm | LBR-25 | 40 | 56 | 5,200 | 6,000 | 2.5 |
Note: All bearings support OEM/ODM (e.g., stainless steel, high-temperature grease, flanged design). Download our full size chart (PDF).
Where Our Linear Bearings Excel
Our linear bearing sizes power critical applications across industries:
- CNC Machines: 16mm bearings in Haas VM-3 mills reduce friction by 30%, extending tool life.
- 3D Printers: 8mm/10mm bearings for Creality Ender-5 improve print accuracy to ±0.05mm.
- Automation Robots: 20mm bearings in KUKA robot arms handle 2,000+ cycles/day without wear.
- Medical Devices: Stainless steel 12mm bearings for MRI scanners (meet FDA/CE standards).
- Packaging Lines: 25mm bearings in Tetra Pak machines reduce downtime by 40%.
Figure 2: YIDI 16mm bearings in a German CNC factory (2026).
Why 1,200+ Companies Trust YIDI for Linear Bearing Sizes
🏆 Certifications
💬 Client Testimonials
"YIDI’s 12mm linear bearings cut our costs by 35% while matching THK’s precision. Their 7-day delivery saved our production line."
– Mark Thompson, Procurement Director at Siemens AG (Germany)
"We needed a custom 18mm bearing for our semiconductor equipment. YIDI delivered prototypes in 5 days—unheard of in our industry."
– Sarah Chen, Engineering Lead at ASML (Netherlands)
"Their size chart is the most detailed I’ve seen. No more trial-and-error with bearing fits."
– David Kim, Owner of CNC Masters (USA)
Linear Bearing Size FAQs – Answered by Our Engineers
Q: How do I measure my linear bearing size?
A: Use a caliper to measure:
- Inner diameter (ID): Matches your shaft size (e.g., 12mm).
- Outer diameter (OD): Fits your housing.
- Length: Affects load capacity.
Q: What’s the most common linear bearing size for CNC routers?
A: 16mm or 20mm for mid-size routers (e.g., ShopBot, Biesse). For hobbyist CNCs (e.g., MPCNC), 12mm is standard. Get a sizing recommendation for your model.
Q: Can YIDI provide linear bearings for non-standard shaft sizes (e.g., 14mm, 17mm)?
A: Yes! We specialize in odd sizes. Example:
- 14mm shaft → LBR-14 (OD: 22mm, Load: 1,600N)
- 17mm shaft → LBR-17 (OD: 26mm, Load: 2,000N)
Q: How does linear bearing size affect load capacity?
A: Rule of thumb: Load capacity scales with shaft diameter². Example:
| Shaft Ø (mm) | Dynamic Load (N) |
|---|---|
| 8mm | 980 |
| 12mm | 1,800 |
| 20mm | 3,800 |
Q: What’s the difference between ball and roller linear bearings?
A:
| Ball Bearings | Roller Bearings | |
|---|---|---|
| Load Capacity | Moderate | High (2-3x more) |
| Precision | Higher (P5/P4) | Good (P6) |
| Speed | 5m/s | 3m/s |
| Cost | Lower | Higher |
Real Customer Reviews for YIDI Linear Bearings
"Ordered 50x 15mm linear bearings for our custom CNC build. The size tolerance was perfect (measured ±0.003mm), and they arrived in 8 days. YIDI’s size chart was spot-on—no fitting issues. Will order again!"
Verified Purchase | 2026-05-15
"We switched from THK to YIDI for our 12mm bearings and saved €3,200/month. The quality is identical, and their OEM service (custom grease) reduced our maintenance downtime by 30%."
Verified Purchase | 2026-03-10
"Needed a 25mm bearing for a unique application. YIDI’s team helped design a custom solution in 3 days. Only 4 stars because shipping to UAE took 12 days (still faster than others)."
Verified Purchase | 2026-01-22
Michael Chen
Senior Linear Motion Engineer | YIDI Motion
15+ years in precision bearing design. Former lead engineer at Schneider Electric. Specializes in linear bearing size optimization for industrial automation. Holds a PhD in Mechanical Engineering from Tsinghua University.
Email: michael.chen@yidimotion.com | LinkedIn: linkedin.com/in/michaelchen-yidi
Ready to Eliminate Linear Bearing Sizing Headaches?
✅ Free size consultation | ✅ 7-day custom prototypes | ✅ 30-day money-back guarantee
YIDI Motion – 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China
