Full Inch Size Range

1/4 inch to 2 inch bore covers all standard imperial shaft diameters from light instrumentation to heavy industrial guidance.

Open Slot Option (OP/UUOP)

Lateral slot enables shaft insertion from the side without removing shaft end fittings — critical for retrofit installations on existing equipment.

GCr15 Chrome Steel

Through-hardened to HRC 58–64. Ball tracks precision-ground to Ra 0.2 µm for low friction and extended service life.

Sealed Option (UUOP)

End seals retain grease and exclude contamination. Suitable for general industrial environments with moderate particulate levels.

Imperial Interchangeability

Dimensions conform to inch standards for direct replacement in existing inch-dimensioned housings without re-machining.

Flexible Lubrication

Standard variants accept oil or grease lubrication. UUOP sealed variants retain factory grease charge for extended intervals.

North American Industrial Equipment

Direct replacement bearings for legacy machinery originally designed to inch standards, eliminating costly housing modifications that would be required when retrofitting metric bearings.

Automation & Robotics

Used in inch-shaft linear actuators and robot arm guide assemblies in facilities that standardise on imperial tooling and measurement systems.

Machine Tool Retrofit

LMBS OP variants allow bearing replacement on machine tools where the shaft cannot be removed from the housing — the open slot enables lateral assembly without disassembly.

Custom Machinery

Specified by machine builders designing equipment for North American markets where inch shafts and housings are the customer-preferred standard.

🔎 Inch Shaft Requirement

Shaft must be ground to the inch nominal diameter with h6/h7 equivalent tolerance. Hardness HRC 60+ and surface roughness Ra 0.4 µm or better are required for rated life.

🔧 Housing Bore

Bore to H7 equivalent tolerance for the inch outer diameter. Press the bearing using a tool that contacts the outer race end face only.

📈 Lubrication

Standard (no-seal) variants: apply light machine oil or NLGI-2 grease at assembly. UUOP sealed variants: factory-greased, re-lubricate every 500 km or 6 months.

⚙ Open Slot Orientation

For OP/UUOP variants, orient the open slot away from the primary load direction — the slot interrupts the ball circuit continuity on one side and that side should not carry the majority of the radial load.

①

Identify Application Type

Confirm the shaft is an inch nominal diameter. If metric, use the LMES series instead.

②

Select Bore & Model

Match bore to shaft nominal diameter (1/4 in to 2 in). Select standard or OP/UUOP based on housing design.

③

Verify Load & Life

Verify L10 = (C/P)³ × 50 km using load ratings in Newtons. For higher loads, select the next bore size up.

④

Contact Us

MOQ 100 units. Contact our team with engineering drawings specifying bore, housing, load case, stroke, and target life.

📞 Ready to Order?

MOQ is 100 units per model. Provide engineering drawings with bore, housing bore tolerance, load case, stroke, speed, and target service life. All catalogue data is for reference only.