Flanged Axial Location

The precision-ground flange face registers directly against the housing shoulder, providing positive axial location without snap rings or adhesive retention.

GCr15 Chrome Steel

Through-hardened to HRC 58–64. Ball tracks ground to Ra 0.2 µm for full-film lubrication at the ball-race contact under rated load conditions.

Dynamic Load 265–4700 N

Covering 9 bore sizes for applications from lightweight instrument stages to heavy industrial press guides.

NBR Dual Lip Seals

Retain factory-applied NLGI-2 grease while excluding dust and contamination. Rated −20°C to +80°C continuous service.

PA66-GF30 Retainer

Glass-filled nylon cage maintains precise ball spacing across the full 360° circuit, preventing ball-to-ball contact and associated noise.

ISO/DIN Interchangeable

All dimensions conform to Euro Standard Flanged (DIN) standards for direct replacement compatibility with equivalent housings.

Semiconductor & Electronics Assembly

Diamond-flange (LMK) variants are specified in SMT pick-and-place machines and PCB drilling heads where the bolt pattern must clear adjacent PCB components; the asymmetric mounting points reduce the flange envelope versus round-flange designs.

Optical & Metrology Equipment

LMF round-flange bearings in microscope focus drives and spectrometer sample stages provide sub-micron runout between the bore and flange face, ensuring that the optical axis remains aligned when the bearing is replaced without re-calibration.

🔎 Flange Face Seating

Ensure the housing counterbore depth matches the bearing flange thickness. An under-depth counterbore leaves the flange proud of the housing face, creating a gap at the bolt interface that allows the bearing to rock under load and introduces harmonic error motion.

🔧 Bolt Torque Sequence

Tighten flange mounting bolts in a cross pattern to 30–50% of final torque, then complete to specification. Sequential tightening distorts the flange and shifts the bore axis by up to 0.05 mm, degrading shaft alignment.

📈 Housing Bore Tolerance

Machine the housing bore to H7 tolerance. For square-flange (LMH/LMHP) variants, also verify the flange seating face is square to the bore within 0.02 mm to prevent cocking the bearing on assembly.

⚙ Lubrication

Apply NLGI-2 lithium-complex grease to the shaft before insertion. Re-lubricate every 500 km of travel or 6 months under normal duty. In washdown environments, shorten the re-lubrication interval and use a water-resistant grease formulation.

①

Confirm Bore & Standard

Match bore diameter to shaft. Confirm Euro Standard Flanged (DIN) housing dimensions — mixing ISO and DIN outer diameters requires housing re-machining.

②

Select Flange Style

Round flange for maximum moment resistance; diamond flange for compact bolt clearance; square flange for torsional resistance.

③

Calculate Load & Life

Compute radial load P. Target L10 = (C/P)³ × 50 km. If life is marginal, specify the LUU extended variant to raise C without changing bore.

④

Contact Us

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

📞 Ready to Order?

MOQ is 100 units per model. Provide engineering drawings with shaft diameter, housing bore depth, flange PCD, load case, stroke, speed, and target life. All catalogue data is for reference only — verify critical dimensions against current revision drawings before committing to tooling.