Cl BARDEN Value Precision Bearings HQW Precision GmbH The Barden Corporation (UK) Ltd

Introduction The Barden Corporation has been the market leader in the supply of super precision ball bearings for more than 70 years. Working together with HQW Precision as Partners in Precision, we share best practices and knowledge, delivering high-end bearings and assemblies tailormade to the demands and requirements of our customers. Together, Barden and HQW supply thousands of bearing variations, each manufactured in state-of-the-art facilities and designed to accommodate the performance needs of the most demanding applications. All products in the Value Precision Bearing range are manufactured...

Special designs, such as other materials, shield-and-seal combinations, cages or coatings, on request. Notes: T*HA/T*HB is a machine-made plastic snap cage. The “*” stands for the material code. Example: THA = phenolic resin; T4HA = Torlon; T15HA = PEEK.

Deep Groove Ball Bearings (Metric)

Deep Groove Ball Bearings (Inch)

(1) Nominal bore value from 9mm (2) Only for deep groove bearings (3) Only for spindle bearings

(1) Nominal bore value from 9mm (2) Only for deep groove bearings (3) Only for spindle bearings

Shaft Retaining Rings Dimensions [mm] Dimensions in mm Retaining Ring d 3 b s Bore Retaining Rings Material 1.4310 Subject to alterations. Please enquire about availability before selecting the shims and spring washers.

Bearing Closures The two basic types of bearing closures are shields and seals, both of which may be ordered as integral components of deep groove bearings. All closures serve the same purposes with varying effectiveness. They exclude contamination, retain lubricants and protect the bearing from internal damage during handling. Closures are attached to the outer ring. If they contact the inner ring they are seals. If they clear the inner ring they are shields. dN definition = Bearing bore in mm x RPM Non-Contact Closures Because of the proximity with the inner ring land, the ball bearing closure...

Materials for Rings and Balls The material and design of the cage can be selected to suit the application operating conditions. Our two-piece ribbon retainer is sufficient in the majority of cases. The following table shows the different types: Application Range/Purpose Two-piece ribbon cage made of: Steel sheet Stainless steel sheet Brass sheet For deep groove ball bearings. For stainless steel ball bearings: cage from stainless steel sheet. This cage can also be clinched loosely to reduce torque. Code W. Please note that whilst a tightly clinched cage is standard, occasionally a riveted variant...

Functional Test Shaft and Housing Shoulders The assembly conditions are very important for all bearings to function correctly. The shoulders for the inner and outer ring should allow the axial load to be transferred safely without allowing the rings to tilt against each other. Functional tests on the assembled bearing include noise and torque tests. These tests ensure the consistency of the production run and guarantee compliance with customer requirements. The functional tests allow the parts to be constantly monitored for good roundness and surface finish. Noise Test The abbreviation ‘V’ given...

Duplex Bearings Calibration Example: C40 = bore calibrated in groups of 1.25 gm. The outside diameter is not calibrated. Classification of calibrated ball bearings. In order to achieve a uniform fit of the bearing on the shaft and in the housing it is necessary to limit the diameter tolerances of the bearings. As it is difficult to control very small tolerances in series production, selective grading may be necessary. Only bearings in the quality grades P5 or ABEC5 or better can be graded into groups of 2.5gm (.0001 inch) or 1.25gm (.00005 inch). The diameter of the housings and shafts should...

[Q) HQW HQW Precision GmbH Wachtelberg 23 97273 Kurnach Germany Phone: +49 (0) 9367 98408-0 Email: [email protected] Web: www.hqw.gmbh The Barden Corporation (UK) Ltd Plymbridge Road, Estover Plymouth PL6 7LH United Kingdom Phone: +44 (0) 1752 735555 Email: [email protected] Web: www.bardenbearings.co.uk All technical data is considered correct at time of printing. No liability can be accepted for any technical alterations, errors or misprints. This publication or parts thereof are protected by copyright and must not be reproduced without permission. HQW-BUK-VPB-01/2023-EN