5202SCLLM bearing: complete specifications & equivalents
The 5202SCLLM is a ISO 15 radial bearing sized 15 x 35 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 | 15 mm |
| Outer diameter D | 35 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) | 13000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 70 g |
| Manufacturer designation | NTN 5202SCLLM |
| 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 | 0.591 in |
|---|---|
| Outer diameter D | 1.378 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) | 3 of 18 |
| Bore above smallest 5200S-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 5202SCLLM | 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 5202SCLLM model number is decoded
The medium-duty 5200S double-row family entry 5202SCLLM carries a 15 mm bore in a 35 mm outside diameter, 15.9 mm wide envelope. The designation breaks down as 52 is the double-row dimension series (medium-duty 5200S double-row family); 02 encodes the 15 mm bore (bore code x 5), and CLLM marks the SC internal design with non-contact rubber seals on both sides. The built-in back-to-back contact lines give the double-row bearing its two-direction thrust and moment capacity from one ring set. Where the same envelope must also be sealed, or where mounting mistakes are likely, compare with the double-row 52/53 catalogue pages before fixing the bill of materials. A 15 mm shaft typically takes a j5/k5 fit for rotating inner-ring load; keep the housing bore to G6/H6 class so the contact geometry is not distorted.
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
- false brinelling on the raceway contact ellipses when a preloaded spindle sits vibrating at standstill — visible as evenly spaced flute-like wear at ball pitch
- thermal runaway from excessive preload: the pair runs hot, grease darkens and the contact ellipse spreads until the raceways smear
- resin-cage cracking on the 7900-series sizes after hot, dry running or solvent attack on the polymer
- lubricant starvation scoring at the ball/raceway contact when grease volume or relubrication interval is guessed instead of calculated
- lubricant starvation scoring at the ball/raceway contact when grease volume or relubrication interval is guessed instead of calculated
Selection pitfalls — read before you substitute
- At 15 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 LLM non-contact-seal executions are grease-for-life: there is no relubrication path, so the grease life calculation replaces the relubrication plan.
- The 13,000 r/min speed figure assumes the catalogue lubrication state and a correctly set pair; real limits drop fast with excess grease fill or heavy preload.
- A 5202SCLLM mounted the wrong way round still turns smoothly by hand; the failure shows up weeks later as raceway flaking on the unloaded-looking side.
- A 5202SCLLM mounted the wrong way round still turns smoothly by hand; the failure shows up weeks later as raceway flaking on the unloaded-looking side.
- The 8.5/5.3 kN ratings and 0.31 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 5202SCLLM; 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 5202SCLLM?
5202SCLLM is a sealed double-row angular contact ball bearing to ISO 15: 15 mm bore, 35 mm outside diameter, 15.9 mm width (0.591 x 1.378 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 13,000 r/min and the oil rating 17,000 r/min; mass about 70 g.
How is the 5202SCLLM designation structured?
52 is the double-row dimension series (medium-duty 5200S double-row family); 02 encodes the 15 mm bore (bore code x 5), and CLLM marks the SC internal design with non-contact rubber seals on both sides. The 35 mm OD and 15.9 mm width follow the ISO 15 boundary-dimension plan for that series.
Which axial direction does 5202SCLLM support?
5202SCLLM is a sealed double-row bearing: thrust in both directions, radial and moment load in one envelope, with non-contact rubber seals that keep the shield-level speed ratings.
What lubrication speeds does NTN print for 5202SCLLM?
Per NTN Ball and Roller Bearings CAT.No.2203E, the grease limiting speed is 13,000 r/min and the oil rating 17,000 r/min. 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 5202SCLLM?
The 15/35/15.9 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.