LMB Series Inch-Size Linear Ball Bearings in Standard, Adjustable-Clearance, and Open Configurations

YIDI MOTION, a manufacturer of linear motion components, today announced the LMB series of inch-size linear ball bearings, engineered for equipment builders and retrofit engineers working with imperial-dimension shafts. The series spans nine bore sizes from 1/4 inch to 2 inches and is offered in three housing configurations to match different mounting and preload requirements.

Three Configurations, One Inch-Size Platform

The LMB series is built around a common inch-dimension envelope, with three structural variants addressing different application needs:

• Standard (UU) – double-sealed, pre-lubricated. Rubber seals on both ends retain grease and block contaminants, the default choice for most general linear motion applications.
• Clearance-adjustable (AJ). An adjustable outer ring allows radial clearance to be tightened or preloaded, for applications requiring improved runout or reduced play under reversal.
• Open type (OP). A side slot runs the length of the housing, allowing the bearing to be clamped onto a shaft that is supported on both ends by rail or shaft blocks, common in long-station and supported-shaft designs.

Key Engineering Features

• Through-hardened bearing steel — raceways are hardened to deliver high hardness, wear resistance, and long service life under reciprocating load.
• Precision-ground OD and bore — ground mounting diameter and bore ensure consistent fit in standard inch-dimension housing bores.
• Steel ball recirculation circuits — 4 to 6 precision steel ball trains provide smooth, low-noise linear travel; larger bores carry additional ball rows to scale with load.
• Integral end seals on UU versions — factory pre-lubricated and sealed for reduced maintenance; relubrication fittings are available on request.
• Inch-standard interchangeability — dimensions follow industry-standard inch linear bearing sizes for straightforward replacement of comparable branded units.
• Quality assurance and customization — each unit is inspected before shipment; custom bore tolerances, special seal materials, and modified lengths supported for OEM programs.

Full Inch Bore Range: 1/4” to 2”

Standard double-seal (UU) model dimensions are summarized below:

AJ (clearance-adjustable) and OP (open) variants carry the same nominal OD and length with corresponding ball row counts and weights as listed in the factory main dimension table. Values are nominal and subject to final factory confirmation; consult YIDI MOTION for tolerances, preload classes, and lubrication data before selection.

Typical Applications

The LMB series is targeted at Cartesian gantries, packaging and labeling equipment, 3D printers, CNC router and engraving tables, semiconductor handling fixtures, medical devices, textile machinery, and aftermarket replacement of inch-dimension linear bushings installed in North American and UK-specified equipment.

Availability

Standard LMB series sizes in UU, AJ, and OP configurations are available for sample and volume orders. Custom bore tolerances, seal materials, and OEM modifications are supported on request.

About YIDI MOTION

YIDI MOTION manufactures inch and metric linear ball bearings, shaft support units, and related linear motion components for automation, packaging, medical, and general machinery builders worldwide. The company focuses on precision grinding, comprehensive specification coverage, quality assurance, and customer-specific customization.