5201SCLLD bearing: complete specifications & equivalents
The 5201SCLLD is a ISO 15 radial bearing sized 12 x 32 x 15.9 mm (bore x OD x width) with 2RS sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 12 mm |
| Outer diameter D | 32 mm |
| Width B | 15.9 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 8.5 kN |
| Basic static load rating C0 | 5.3 kN |
| Fatigue load limit Pu | 0.31 kN |
| Limiting speed (mechanical) | 12000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 60 g |
| Manufacturer designation | NTN 5201SCLLD |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 5200S-series range
| Bore d | 0.472 in |
|---|---|
| Outer diameter D | 1.26 in |
| Width B | 0.626 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 10 mm |
| Smallest bore in 5200S-series | 10 mm |
| Largest outer diameter in 5200S-series | 150 mm |
| Width range across 5200S-series | 14.3–49.2 mm |
| Bore position in 5200S-series (smallest first) | 2 of 18 |
| Bore above smallest 5200S-series size | 2 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 5201SCLLD | ISO 15 | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | ISO 15 boundary-dimension envelope; seal suffix convention varies by brand (2RS / DDU / LLU / 2RSR) — verify seal design and temperature range before substituting. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 5201SCLLD model number is decoded
The medium-duty 5200S double-row family entry 5201SCLLD carries a 12 mm bore in a 32 mm outside diameter, 15.9 mm wide envelope. Two fields make up the code — 52 is the double-row dimension series (medium-duty 5200S double-row family) and 01 encodes the 12 mm bore (bore code x 5), and CLLD marks the SC internal design with contact rubber seals on both sides. The radial section height here is 10.0 mm, and the catalogue couples that with C 8.5 kN / C0 5.3 kN. If the duty is mainly high speed with modest thrust, the 7900-series cross-section is the lighter alternative; if thrust dominates, the 7300-series section carries more. Grease quantity matters as much as grade at 12,000 r/min: fill about a third of the free space and let the bearing purge on first run.
Typical equipment & failure modes
Common applications
- bicycle and motorcycle wheel and steering positions
- small gearbox pinion shafts with helical gears
- precision instrument and encoder support shafts
- small machine-tool spindle and live-centre positions
Known failure patterns
- impact brinelling dents on the 30 deg contact path after a shaft-side hammer blow during mounting, because axial shock travels straight through the contact angle
- thermal runaway from excessive preload: the pair runs hot, grease darkens and the contact ellipse spreads until the raceways smear
- pressed-steel cage pocket wear and rivet loosening after repeated ball skid at light load and high speed
- current-erosion pitting on VFD-driven motor shafts, first visible as a grey frosted band across both raceways
- contamination-induced denting — hard particles rolled into the contact ellipse become the initiation points for surface fatigue
Selection pitfalls — read before you substitute
- At 12 mm bore the rings are thin-sectioned: press force must go through the ring being fitted, never through the balls, or the first damage is already in the raceway before the machine runs.
- Sealed LLD contact-seal executions are grease-for-life: there is no relubrication path, so the grease life calculation replaces the relubrication plan.
- A single-row angular contact left loose on the shaft to "help assembly" will fret the seat: the contact angle keeps driving the ring axially under load.
- Catalogue mass and ratings belong to the open execution; shields, seals and resin cages change both the speed ceiling and the thermal behaviour of the same basic size.
- A single-row angular contact left loose on the shaft to "help assembly" will fret the seat: the contact angle keeps driving the ring axially under load.
- The 8.5/5.3 kN ratings and 0.31 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 5201SCLLD; internal geometry legitimately differs between manufacturers, so re-verify ratings, contact angle and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 5201SCLLD?
5201SCLLD is a sealed double-row angular contact ball bearing to ISO 15: 12 mm bore, 32 mm outside diameter, 15.9 mm width (0.472 x 1.26 x 0.626 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 8.5 kN, C0 5.3 kN and a 0.31 kN fatigue load limit Pu; the grease limiting speed is 12,000 r/min and no oil rating is printed for this execution; mass about 60 g.
How is the 5201SCLLD designation structured?
52 is the double-row dimension series (medium-duty 5200S double-row family); 01 encodes the 12 mm bore (bore code x 5), and CLLD marks the SC internal design with contact rubber seals on both sides. The 32 mm OD and 15.9 mm width follow the ISO 15 boundary-dimension plan for that series.
Which axial direction does 5201SCLLD support?
5201SCLLD is a sealed double-row bearing: thrust in both directions, radial and moment load in one envelope, with contact rubber seals (grease-lubricated, no oil speed rating).
What lubrication speeds does NTN print for 5201SCLLD?
Per NTN Ball and Roller Bearings CAT.No.2203E, the grease limiting speed is 12,000 r/min and no oil rating is printed for this execution. These are catalogue ceilings for a correctly mounted bearing with the stated lubricant; preload, fill quantity, ambient heat and paired arrangements all move the real limit.
What should be checked before substituting another make for 5201SCLLD?
The 12/32/15.9 mm envelope is ISO 15 interchangeable, but internal geometry — contact angle, osculation, cage and shoulder details — is maker-specific. Re-verify C 8.5 kN / C0 5.3 kN, the speed figures, contact angle and suffix meaning against the donor catalogue before swapping on a rated drive.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.