Linear Motion Bearing

Brand: LOCUS
Manufacturer: Adarsh Bearings Pvt. Ltd.
Material: Bearing Steel (SUJ2), Stainless Steel (optional)
Outer Structure: Cylindrical Outer Sleeve
Type: Open / Closed Type, Flanged / Non-Flanged
Lubrication: Pre-lubricated with Lithium-Based Grease
Precision Class: ISO P0 / P6 / P5
Model Variants: LM, LME, LMB, KH, SBR, SC Series
Country of Origin: India
Trademark: LOCUS® (Registered)
Certifications: ISO 9001:2015, CE, RoHS (On Request), REACH

Description

1. Product Description

LOCUS Linear Motion Bearings are high-precision rolling bearings designed for linear applications. These bearings allow for smooth, low-friction motion in linear paths and are ideal for CNC machines, 3D printers, automation equipment, and industrial robotics. Manufactured by Adarsh Bearings Pvt. Ltd., each unit undergoes strict quality control as per ISO 9001:2015 standards.

2. Specifications (Standard LM Series)

Model	Inner Diameter (ID)	Outer Diameter (OD)	Length (L)	Static Load Rating (C₀)
LM6UU	6 mm	12 mm	19 mm	70 N
LM8UU	8 mm	15 mm	24 mm	120 N
LM10UU	10 mm	19 mm	29 mm	200 N
LM12UU	12 mm	21 mm	30 mm	250 N
LM16UU	16 mm	28 mm	37 mm	400 N
LM20UU	20 mm	32 mm	42 mm	600 N

Other sizes available on request. Customizations available for special industrial applications.

3. Working

Linear motion bearings work by allowing ball bearings to roll inside the bearing sleeve. These balls are constrained within a retainer that moves linearly with the shaft while maintaining precision and minimizing friction.

4. Principle

The principle is based on linear rolling motion using recirculating balls. The balls roll between the inner shaft and outer sleeve in a closed loop. This drastically reduces friction compared to sliding motion, enabling high-speed and precise movement.

5. Assembly

Slide the bearing onto the linear shaft.
Secure it using end blocks or pillow blocks.
If using a flanged bearing, fix the flange with screws.
Ensure alignment is straight to avoid misloading.
For open-type LM bearings, ensure shaft is supported using guide rails.

6. Installation Process

Clean the shaft and housing to remove debris.
Align the shaft parallel to the mounting surface.
Insert the bearing gently; do not hammer.
Use retaining rings or blocks to secure the bearing.
Lubricate before operation.
Perform test runs to ensure smooth movement.

7 Technical Specifications

Parameter	Details
Material	SUJ2 Bearing Steel / Stainless Steel
Hardness	HRC 60–64
Operating Temperature	-20°C to +80°C (standard)
Tolerance Class	ISO h6 / P0 / P6
Lubrication	Lithium Grease / Oil
Load Type	Radial Load, Low Axial Load
Friction Coefficient	≤ 0.003
Shaft Compatibility	Hardened and Ground Shaft
Life Expectancy	>10 million strokes under optimal conditions

8. Troubleshooting

Problem	Cause	Solution
Rough or sticky motion	Contamination or misalignment	Clean, re-lubricate, realign shaft
Noisy movement	Lack of lubrication	Re-lubricate
Excessive play or backlash	Worn bearing or improper fit	Replace bearing or adjust fit
Vibration during motion	Bent shaft or damaged balls	Check shaft straightness
Bearing seizure	Dirt ingress or overheating	Clean thoroughly, inspect for wear

9. HS Code

Product	HS Code (India)
Linear Motion Bearings	8482.10.00

10. FAQs

Q1: What’s the difference between open and closed type LM bearings?
A: Open-type bearings allow mounting over support rails; closed-type fully wrap around the shaft.

Q2: Are these bearings suitable for vertical loads?
A: No, they are ideal for horizontal or angled setups with radial loads.

Q3: Can I use stainless steel versions for corrosive environments?
A: Yes, stainless steel variants are available for such applications.

Q4: Do I need to lubricate them after purchase?
A: No. LOCUS bearings are pre-lubricated, but periodic re-lubrication improves lifespan.

Q5: Can I use standard shafts?
A: Precision-ground shafts are recommended for smooth motion and longer life.

11. Applications