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High Precision · Low Friction · Smooth Motion · Long Life · CNC & Automation Standard
Linear Ball Bearing (also known as Linear Bush) is a standard linear motion component that uses precision steel balls to achieve infinite linear motion with extremely low friction. It features a compact design, high precision, and smooth operation, widely used with linear shafts in various automated machinery, CNC machines, 3D printers, and precision instruments. Our LM UU series offers standard, flanged, open, and adjustable types to meet diverse industrial requirements.
Closed type, double rubber seals, general purpose.
Integrated flange for easy mounting and positioning.
C-type open design, adjustable clearance, easy installation.
Extended length, higher load capacity and stability.
Precision steel balls, smooth rolling, high efficiency.
Strict tolerance control, stable linear motion.
Small size, light weight, ideal for compact design.
Excellent dust-proof, anti-lubricant leakage.
Suitable for high-speed linear motion systems.
High-quality bearing steel, durable and wear-resistant.
Standard Models & Specifications (LM UU Series) | Model | d (mm) | D (mm) | B (mm) | Basic Load (N) |
|---|---|---|---|---|
| LM3UU | 3 | 7 | 10 | 26 / 31 |
| LM4UU | 4 | 8 | 12 | 35 / 42 |
| LM5UU | 5 | 10 | 14 | 118 / 131 |
| LM6UU | 6 | 12 | 19 | 147 / 176 |
| LM8UU | 8 | 15 | 24 | 274 / 323 |
| LM10UU | 10 | 19 | 29 | 343 / 411 |
| LM12UU | 12 | 21 | 30 | 510 / 784 |
| LM13UU | 13 | 23 | 32 | 549 / 833 |
| LM16UU | 16 | 28 | 37 | 833 / 1270 |
| LM20UU | 20 | 32 | 42 | 1320 / 1960 |
| LM25UU | 25 | 40 | 59 | 1960 / 2940 |
| LM30UU | 30 | 45 | 64 | 2690 / 3920 |
| LM35UU | 35 | 52 | 70 | 3430 / 4900 |
| LM40UU | 40 | 60 | 80 | 4410 / 6370 |
| LM45UU | 45 | 69 | 100 | 5390 / 7840 |
| LM50UU | 50 | 75 | 100 | 6080 / 9310 |
| LM6UUOP | 6 | 12 | 19 | 147 / 176 |
| LM8UUOP | 8 | 15 | 24 | 274 / 323 |
| LM10UUOP | 10 | 19 | 29 | 343 / 411 |
| LM12UUOP | 12 | 21 | 30 | 510 / 784 |
| LM16UUOP | 16 | 28 | 37 | 833 / 1270 |
| LM20UUOP | 20 | 32 | 42 | 1320 / 1960 |
| LMF12UU | 12 | 21 | 30 | 510 / 784 |
| LMF20UU | 20 | 32 | 42 | 1320 / 1960 |
Outer Shell: High-carbon chromium bearing steel (SUJ2), hardness HRC 60-64
Steel Balls: High-precision GCr15 bearing steel, mirror finish
Cage: High-strength resin/steel, stable, low noise
Seals: Nitrile rubber (NBR), excellent dust and oil resistance
Precision Grade: P0 (Standard), P6 (High Precision)
Operating Temp.: -20°C to +80°C
Inner Pack: Individual plastic tube / box
Outer Pack: Standard export carton + plywood pallet
Sample Order: 1-3 days delivery
Bulk Order: 7-15 days production
Shipping: Sea (Shanghai/Ningbo), Air, Express (DHL/FedEx/UPS)
T/T: 30% deposit, 70% balance before shipment
L/C: Irrevocable L/C at sight
Trade Assurance: Alibaba secure payment
PayPal / Western Union: For samples & small orders
Warranty: 12 months quality guarantee
Inspection: 100% tested before shipment
Technical Support: 24/7 online service
Free Service: Model selection & installation guide
Replacement: Free for quality defects
20+ Years Professional Bearing Manufacturer
ISO9001, CE Certified
Advanced CNC & Testing Equipment
Full Series in Stock, Fast Delivery
OEM & ODM Customization Accepted
Export to 90+ Countries Worldwide
Stable Quality & Factory Direct Price
Contact us for competitive prices, free samples & full technical support!
