Dual Lip Seals (UU)

NBR rubber lip seals on both end faces retain NLGI-2 grease and exclude contamination. Rated −20°C to +80°C continuous service.

ISO/JIS Standard

All dimensions conform to JIS B 1192, ensuring direct interchangeability with housings from any manufacturer built to the same standard.

4–6 Ball Circuits

Multiple independent recirculating ball circuits distribute load evenly across the shaft circumference, preventing localised fatigue.

GCr15 Chrome Steel

Through-hardened to HRC 58–64. Ball tracks ground to Ra 0.2 µm for full-film lubrication at rated load.

PA66-GF30 Retainer

Glass-filled nylon cage maintains precise ball spacing, preventing ball-to-ball contact noise at higher traverse speeds.

15 Bore Sizes

6 mm to 100 mm bore covers the full range of standard industrial shaft diameters in a single product family.

GCr15 Chrome Steel

AISI 52100 equivalent. Through-hardened HRC 58–64. Ball tracks precision-ground to Ra 0.2 µm for full-film lubrication at rated load.

PA66-GF30 Retainer

Glass-fibre-reinforced nylon cage. Maintains 360° ball spacing. Resistant to mineral oils, greases, and dilute acids across the service temperature range.

NBR Dual Lip Seals

Contact seals on both end faces. Retain grease and exclude dust, swarf, and splash. Operating range −20°C to +80°C with standard NLGI-2 grease.

3D Printing & Additive Manufacturing

Print-head carriages and bed-levelling stages in FDM, SLA and SLS printers depend on smooth linear motion to achieve layer-to-layer registration tolerances below 0.05 mm.

Medical Device Assembly

Syringe pumps, infusion systems, and diagnostic cartridge dispensers rely on consistent linear force transfer and contamination resistance to meet IEC 60601 reliability requirements.

Packaging & Labelling Lines

High-cycle pick-and-place heads and label applicators use LM series bearings for smooth, repeatable shaft travel at up to 600 strokes per minute with minimal maintenance intervals.

Medical Device Stages

Syringe pump drives and diagnostic cartridge dispensers rely on consistent linear force transfer and contamination resistance to meet IEC 60601 reliability requirements.

🔎 Shaft Specification

Match the shaft to h6 tolerance ground on bearing-quality steel hardened to HRC 60 or above. Surface roughness should not exceed Ra 0.4 µm. An undersized or soft shaft accelerates ball-track wear and reduces service life by up to 70%.

🔧 Housing Bore Fit

Press the bearing into an H7-tolerance bore using a press tool that bears only on the outer ring face. Never strike the inner bore. For split housings, tighten retaining screws symmetrically to avoid distorting the outer diameter.

📈 Lubrication at Assembly

Apply a thin film of lithium-complex NLGI-2 grease to the shaft before insertion. This provides initial lubrication to the ball tracks during the first few strokes before the internal grease charge distributes fully.

⚙ Alignment Check

After installation, traverse the shaft manually through the full stroke. Resistance should be uniform. A stiff patch indicates shaft misalignment exceeding 0.03 mm/100 mm — correct the housing position before powering the drive.

①

Confirm Configuration

Confirm whether sealed (UU), open-slot (OP), or adjustable-clearance (AJ) configuration suits the housing design and contamination level.

②

Select Bore & Verify Housing

Match bore to shaft nominal diameter. Verify outer diameter D and length L against housing bore and counterbore depth.

③

Calculate Load & Life

Calculate L10 = (C/P)³ × 50 km. If life is marginal, upgrade to the LM...LUU extended series for higher C without changing bore.

④

Contact Us

MOQ 100 units per model. Contact our team with engineering drawings confirming shaft diameter, housing bore, load case, stroke, and target life.

📞 Ready to Order?

MOQ is 100 units per model. Provide engineering drawings specifying shaft diameter and tolerance, housing bore, load case, stroke, operating speed, and target service life. All catalogue data is for reference only — verify critical dimensions against current revision drawings before finalising design.