Model datasheet
6203-ZZ Deep Groove Ball Bearing 17x40x12mm
Confirm the model number, dimensions, suffix, and replacement notes before sending a quotation request for repair or MRO sourcing.
Verified directory reference: Specifications have been reviewed, but the complete suffix and current order requirement must still be confirmed before purchase.
6203-ZZ bearing specifications
| Parameter | Value |
|---|---|
| Model | 6203-ZZ |
| Category | Deep Groove Ball Bearing |
| Series | 6200 Series |
| Inner Diameter (ID) | 17 mm |
| Outer Diameter (OD) | 40 mm |
| Width | 12 mm |
| Material | Chrome Steel GCr15 |
| Closure | Metal Shielded (ZZ) |
| Dynamic Load | 9.5 kN |
| Static Load | 4.8 kN |
| Speed Limit | 18000 RPM |
| Precision | P0 (ABEC-1) |
| Clearance | CN (Standard) |
6203-ZZ brand designation references
Interchange Numbers: 6203Z · 6203ZZS
Catalogue designations reviewed for this model include SKF 6203-2Z, FAG 6203-2ZR, NSK 6203ZZ, NTN 6203ZZ, Timken 203ZZ.
These catalogue references have source records, but the complete suffix and operating requirement must still be confirmed.
| Brand | Brand designation | Reference status |
|---|---|---|
| SKF | 6203-2Z | Source recorded SKF rolling bearing catalogue — 6203-2Z · |
| FAG | 6203-2ZR | Source recorded Schaeffler FAG rolling bearing catalogue — 6203-2ZR · |
| NSK | 6203ZZ | Source recorded NSK rolling bearing catalogue — 6203ZZ · |
| NTN | 6203ZZ | Source recorded NTN rolling bearing catalogue — 6203ZZ · |
| Timken | 203ZZ | Source recorded Timken bearing catalogue — 203ZZ · |
Frequently asked questions about 6203-ZZ
What does the open design mean on a 6203-ZZ bearing?
The 6203-ZZ (17mm x 40mm x 12mm) is supplied open — without seals or shields — so lubrication and relubrication come from the surrounding housing or an external system. Compare seal types before deciding on the replacement.
Which part numbers are equivalent to 6203-ZZ?
Equivalent designations include 6203-2Z, 6203-2ZR, 6203ZZ, 203ZZ, 6203Z, 6203ZZS . These are brand-specific numbers for the same ISO boundary dimensions as the 6203-ZZ (17mm x 40mm x 12mm). The basic number matching does not confirm the complete specification — compare seal type, clearance, precision, cage, and lubrication suffix before ordering.
Does the 6203-ZZ come with C3 clearance?
This directory lists the 6203-ZZ with CN (Standard). C3 (increased internal clearance) versions are common for higher operating temperatures, higher speeds, or press-fit arrangements — specify the required clearance on your RFQ so the quotation matches the application. Read the clearance guide.
The 6203-ZZ is listed as a 17×40×12mm deep groove ball bearing in double metal shielded configuration. Part of the 6200 series, the directory records chrome steel gcr15 and P0 (ABEC-1) precision grade for RFQ verification.
The 6203-ZZ bearing cross-references to SKF 6203-2Z, FAG 6203-2ZR, NSK 6203ZZ and NTN 6203ZZ. This means you can replace an SKF equivalent, FAG alternative, NSK cross reference, or NTN interchange part with the same ISO boundary dimensions. Compare the full specification table and designation suffixes before ordering, especially the seal type (2RS vs ZZ) and internal clearance (C3 vs CN).
About the 6200 Series
The 6200 series is the most widely used light duty deep groove ball bearing series in industrial applications. It offers an optimal balance of load capacity, speed capability, and dimensional economy — the default choice for electric motors, pumps, and general machinery.
Common Applications
- Electric Motors
- Pumps
- Compressors
- Conveyors
- Washing Machines
- Gearboxes
Common applications for 6203-ZZ
The 6203-ZZ is a common replacement candidate in the following equipment. Open the application guide to confirm the checks that apply to your machine before ordering:
Compare 6203-ZZ with nearby sizes
These models are the closest sizes in the same bearing family. They are not interchangeable — confirm the bore, outside diameter, and width before replacing the existing part.
| Model | Dimensions | Closure | Action |
|---|---|---|---|
| 6202-ZZ | 15mm x 35mm x 11mm | Metal Shielded (ZZ) | View specifications |
| 6302-ZZ | 15mm x 42mm x 13mm | Metal Shielded (ZZ) | View specifications |
| 6003-ZZ | 17mm x 35mm x 10mm | Metal Shielded (ZZ) | View specifications |
| 6303-ZZ | 17mm x 47mm x 14mm | Metal Shielded (ZZ) | View specifications |
| 6004-ZZ | 20mm x 42mm x 12mm | Metal Shielded (ZZ) | View specifications |
Fast bearing RFQ
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A model number is enough to start. If the marking is unclear, send the dimensions, application, or a shared photo link in the message.
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