6322-RSR bearing: complete specifications & equivalents
The 6322-RSR is a ISO 15 radial bearing sized 110 x 240 x 50 mm (bore x OD x width) with RSR sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 110 mm |
| Outer diameter D | 240 mm |
| Width B | 50 mm |
| Material | GCr15 |
| Seal / shield | RSR |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 227 kN |
| Basic static load rating C0 | 179 kN |
| Fatigue load limit Pu | 10.5 kN |
| Limiting speed (mechanical) | 2900 rpm |
| Mass | 9540 g |
| Manufacturer designation | NTN 6322LLB |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203-3/E (2024) |
| Last verified | 2026-09-25 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203-3/E (2024)) · extracted 2026-09-25
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203-3/E (2024)); 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 & 6300-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 9.449 in |
| Width B | 1.969 in |
| ISO bore code | 22 |
| Radial section height (D−d)/2 | 65 mm |
| Smallest bore in 6300-series | 10 mm |
| Largest outer diameter in 6300-series | 500 mm |
| Width range across 6300-series | 11–95 mm |
| Bore position in 6300-series (smallest first) | 23 of 34 |
| Bore above smallest 6300-series size | 100 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6322 | ISO-INTERCHANGE | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | ISO 15 envelope interchange; NTN suffix LLB maps to industry-neutral RSR. Verify seal design, grease and speed rating per brand catalogue. |
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 6322-RSR model number is decoded
In the 6300-series (diameter series 3 of ISO 15) the last two digits encode the bore: 6322 carries bore code 22 = 110 mm. Outside diameter 240 mm and width 50 mm come from the ISO 15 boundary-dimensions general plan. Suffix -RSR denotes two low-friction non-contact elastomer seals; they keep coarse debris out with minimal drag but are not liquid-tight. For normal-load mounting with a rotating inner ring on a 110 mm shaft, typical catalogue practice is a m6 shaft seat with an H7 housing bore — verify against the actual load direction and magnitude. NTN's non-contact seal suffix is LLB/LLF (catalogue number 6322LLB), mapped here from the industry-neutral -RSR spelling.
Typical equipment & failure modes
Common applications
- industrial fans and blowers
- hoists and winches
- heavy conveyors
- pulp and paper machinery
Known failure patterns
- ingress of fine dust or moisture past the non-contact lip in dirty or wet duty (RSR is not liquid-tight)
- lip-lubricant starvation if the bearing runs dry for extended periods
- brinelling from static overload or hammering during mounting
- false brinelling from vibration while the shaft is stationary
Selection pitfalls — read before you substitute
- Mount this 110 mm bore bearing by heating the inner ring (induction heater, max 120 °C) — never drive it home through the outer ring or balls, that brinells the raceways.
- The 63xx medium series gains rating at 110 mm bore through a 240 mm OD and 50 mm width; the heavier rolling elements also trade away some speed versus a 6222.
- RSR low-friction seals on 6322-RSR run faster than contact-seal 6322-2RS but let fine dust and moisture past the non-contact lip; in dirty or wet duty specify 6322-2RS instead.
- The non-contact lip of 6322-RSR does not retain a lifetime grease fill the way a contact seal does; confirm the regreasing interval for the 110 mm bore position before relying on it as sealed-for-life.
- Shaft and housing fillets must clear the bearing chamfer so the 50 mm-wide ring seats square; provide an undercut or withdrawal groove instead of relying on an oversized radius.
- NTN catalogues this low-friction non-contact seal as 6322LLB (suffix LLB), mapped here from the industry-neutral -RSR spelling. NTN rates its speed capability the same as the open bearing, but it is not liquid-tight — for wet or fine-dust duty step up to the LLU contact seal (industry-neutral -2RS).
- The 227/179 kN load ratings, 10.5 kN fatigue load limit Cu and 9540 g mass here are NTN Ball and Roller Bearings CAT.No.2203-3/E figures for 6322LLB; this seal/size combination has no counterpart from another catalogue on this site, so the page rests on a single manufacturer source — internal geometry and ratings legitimately differ between brands, so re-verify before substituting in a rated drive.
Frequently asked questions
What are the dimensions of a 6322-RSR bearing?
A 6322-RSR deep-groove ball bearing has a 110 mm bore, 240 mm outer diameter and 50 mm width (4.331 × 9.449 × 1.969 in), per ISO 15 boundary dimensions. It is fitted with two low-friction non-contact rubber seals.
How does the 6322 bore code work?
The last two digits of 6322 are bore code 22, giving 22 × 5 = 110 mm bore. The 240 mm outside diameter and 50 mm width follow the ISO 15 diameter series, not the bore code alone.
What does the RSR suffix on 6322-RSR mean?
RSR means two low-friction non-contact rubber seals. They keep coarse debris out with minimal drag (speed close to the open bearing) but are not liquid-tight; use -2RS contact seals for wet or fine-dust environments.
How does the 6300 compare with other series at the same 110 mm bore?
The '3' is the medium diameter series: 240×50 mm, 65.0 mm radial section at 110 mm bore, carrying more load than a 6222 but needing a larger housing bore and giving up some speed.
What is the NTN designation and catalogue data for 6322-RSR?
In the NTN Ball and Roller Bearings catalogue (CAT.No.2203-3/E, 2024) this size is listed as 6322LLB — two low-friction non-contact rubber seals (NTN suffix LLB), 110×240×50 mm per ISO 15. Quoted values: C 227 kN, C0 179 kN, Cu 10.5 kN, mass 9540 g. Grease limiting speed 2900 rpm. The industry-neutral page spelling 6322-RSR follows the seal-suffix convention used across this site, not NTN order-number spelling.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203-3/E (2024) on 2026-09-25. Read our editorial & correction policy.