SMR52ZZ Stainless Steel Miniature Ball Bearing

2 x 5 x 2.5 mm | AISI 420 / AISI 304 | Double Metal Shields (ZZ)

EKB supplies SMR52ZZ stainless steel miniature deep groove ball bearings in AISI 420 and AISI 304 material options. The bearing measures 2 mm bore, 5 mm outside diameter and 2.5 mm width, with metal shields on both sides.

SMR52ZZ is a compact bearing used in small rotating assemblies where installation space is limited. Stainless steel versions can be considered when corrosion resistance is an important factor in bearing selection.

EKB supplies miniature bearings to overseas distributors, equipment manufacturers and industrial buyers. Customers can specify the required material and quantity when requesting a quotation.

SMR52ZZ Bearing Specifications

Material Options

AISI 420 Stainless Steel
AISI 420 is a martensitic stainless steel that can be heat-treated to increase hardness. It is used in components requiring suitable wear resistance and mechanical properties.

AISI 304 Stainless Steel
AISI 304 is an austenitic stainless steel offering corrosion resistance in many common humid and moisture-prone environments. Actual bearing performance depends on the complete bearing construction and working conditions.

SMR52ZZ is available in AISI 420 and AISI 304 material options. Please specify your required material when placing an inquiry. Stock quantity and delivery arrangements are confirmed according to the order.

Bearing Construction and Applications

SMR52ZZ is a miniature deep groove ball bearing with metal shields on both sides. The ZZ shields help retain lubricant and reduce the entry of light dust and contaminants. Metal shields are not waterproof seals.

The 2 x 5 x 2.5 mm size may be used in miniature motors, small sensors, electronic equipment, RC models, compact drive systems and other small mechanical assemblies.

For applications involving water, cleaning chemicals, higher speeds or unusual loads, the bearing material and operating conditions should be checked before selection.

Bearing Identification and Cross-Reference

SMR52ZZ has boundary dimensions of 2 x 5 x 2.5 mm. Other miniature bearing designations with similar dimensions may be used for reference when identifying an existing bearing.

MR52ZZ and selected DDL-520 series configurations may be relevant when checking bearing dimensions. However, different models may have different materials, widths, precision grades, internal clearances or lubrication.

Cross-reference information is provided for identification purposes only and does not guarantee direct interchangeability.

When replacing an existing bearing, please check the complete dimensions and shield configuration. You can also send us the original bearing number, photo or drawing for identification.

Bearing Identification Service

Quality Inspection and Shipment

EKB works with manufacturing and supply partners to coordinate bearing orders and product specifications. Inspection requirements and supporting documentation can be discussed according to the order.

Bearing inspection equipment

Products are packed according to bearing type, order quantity and transportation requirements. EKB coordinates packing and delivery arrangements before shipment.

Bearing packing and shipment

Frequently Asked Questions

What are the dimensions of SMR52ZZ?
SMR52ZZ measures 2 mm bore, 5 mm outside diameter and 2.5 mm width.

What stainless steel materials are available?
EKB offers AISI 420 and AISI 304 material options for SMR52ZZ. Please specify the preferred material when ordering.

What does ZZ mean?
ZZ indicates metal shields on both sides of the bearing. They help retain lubricant and reduce the entry of light contaminants.

Can SMR52ZZ replace MR52ZZ?
These designations may share the same boundary dimensions, but material, shielding and other technical requirements should be checked before replacement.

Can EKB supply other miniature bearing sizes?
Yes. EKB supplies various miniature bearing models. Please send your model list or drawings for quotation.

Related Bearings

SMR63ZZ Stainless Steel Miniature Ball Bearing - 3 x 6 x 2.5 mm

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Request a Quote

For SMR52ZZ stainless steel miniature bearings, please send us your required material, quantity and delivery destination.

If you are replacing an existing bearing or need a special configuration, you can also provide the original bearing number, photo or technical drawing.

Contact EKB for current stock availability, pricing and order details.

Contact EKB - Request a Quote