KH Series Compact Drawn Cup Linear Ball Bearings

KH Series Compact Linear Bearing Overview

KH..PP Models and Specifications

Use Shaft Diameter d, Outside Diameter D, and Length B to check the principal installation dimensions. Dynamic Load Rating C and Static Load Rating C₀ are separate selection inputs; neither should be treated as a universal allowable working load for every machine or duty cycle.

Specifications shown are for our available KH..PP series. Load ratings may vary between manufacturers and application conditions. Confirm operating requirements before using these values as a direct replacement for another manufacturer’s bearing.

All listed dimensions are in millimeters, load ratings in newtons, and weights in kilograms. When comparing supplier quotations, check the units and full model designation as well as the numbers. A matching shaft diameter alone does not confirm a matching housing bore, bearing length, or load rating.

What Does the KH..PP Design Offer?

The drawn-cup format provides a compact outer envelope for layouts that need to reduce radial installation space compared with bulkier linear-bearing arrangements. The outer sleeve forms part of the bearing assembly, while the recirculating ball design supports travel along the shaft. The housing and shaft remain essential parts of the complete motion system.

The KH..PP configuration represented here includes sealing or wiping elements at both ends. These help manage contamination at the shaft entry points; they do not establish suitability for every dusty, wet, or chemically exposed environment. Confirm the supplied sealing configuration and lubricant requirements for your application before ordering.

For buyers, the practical benefit is a defined compact bearing format that can be evaluated against the machine drawing. Selection should account for the surrounding assembly rather than relying on a general claim of higher precision, lower noise, or longer life.

KH Series vs Standard LM Series Linear Bearings

KH uses the compact drawn-cup format. The standard LM series linear ball bearings use a conventional cylindrical linear-bearing format. Their installation envelopes and housing arrangements differ, so a common nominal shaft size does not make the two formats directly interchangeable.

Compare outside diameter, length, housing support, mounting requirements, and the load ratings of the actual models under consideration. KH can be considered where radial space is constrained; an LM arrangement may suit a housing designed around its conventional format. The choice depends on the shaft size, available space, load, and operating conditions. Neither series is universally better for every machine. For a step-by-step comparison, see our KH vs LM linear bearing comparison.

How to Select a KH Series Linear Bearing

• Start with the shaft diameter. Match the nominal shaft size to d, then review shaft condition and suitability for the bearing.
• Check the housing envelope. Compare D and B with the housing drawing, available bore depth, and surrounding components. Allow for the complete mounting arrangement.
• Review dynamic and static loads. Provide the expected moving load, stationary load, and any shock or uneven loading. Bearing count and layout also affect the selection review.
• Specify sealing and environment. Describe dust, moisture, exposure to process materials, and any cleaning requirements. Confirm whether the KH..PP configuration meets the actual conditions.
• Confirm lubrication requirements. State the lubricant used in the machine, if known, and the planned lubrication access or service arrangement.
• Include purchasing details. Send quantity, replacement requirements, and destination country so the quotation addresses the intended order.

Do not choose a replacement only by outside dimensions or a similar-looking part number. Manufacturer-specific load ratings and internal designs can differ. If replacing another brand, supply its complete model, specification sheet, and operating requirements for review. This page does not establish direct interchange approval for another manufacturer’s bearing.

Installation and Application Considerations

Confirm housing bore suitability and the required fit before assembly. The housing must support the bearing in the intended arrangement without distorting the sleeve. Check the bore for damage, burrs, and contamination, and use the mounting procedure specified for the selected bearing and housing.

Inspect the shaft surface and confirm that it is suitable for linear-ball-bearing operation. Damage, contamination, or poor alignment can affect motion and loading. Align the shaft and bearing housings carefully; do not use assembly force to compensate for a mismatched or misaligned installation.

Avoid excessive installation force and protect the sealing elements and ball circuits during handling. Use appropriate assembly tooling and confirm where installation force may be applied. Do not assume that a compact drawn-cup bearing can be installed without tools or that all housings use the same retention method.

Keep the assembly clean and establish a lubrication plan for the actual duty cycle and environment. Confirm lubricant compatibility, replenishment needs, and contamination control before operation. Speed limits, temperature limits, shaft tolerances, and housing tolerances require product-specific confirmation; the dimensional table does not define those limits.

Typical Applications

KH bearings may be considered for industrial automation, compact linear stages, packaging machinery, assembly equipment, measuring equipment, light machine systems, material handling mechanisms, and general linear-motion equipment. In each case, the compact format must be checked against the machine’s actual load and installation requirements.

For example, an OEM reviewing a compact assembly mechanism can compare the shaft size and available housing diameter first, then submit the load and movement conditions for selection review. A maintenance buyer should also check the existing mounting arrangement and the reason for replacement before ordering the same nominal size.

Ordering Information

Send the following information with your RFQ for KH Series linear bearings:

• KH model or complete designation and shaft diameter.
• Required quantity and intended application.
• Dynamic, static, or shock load conditions, if known.
• Replacement brand and model, with a drawing or specification sheet when available.
• Required sealing configuration and lubrication requirements.
• Packaging requirements and destination country.

If the model has not been selected, send the shaft diameter, available housing diameter, bearing length constraints, and operating conditions. Identify any requirement that is essential to acceptance so it can be addressed in the quotation. For recurring purchases, include your receiving or inspection requirements with the inquiry.

You can also browse the bearing product range when sourcing related components. Confirm each product family separately against its intended application.