2217 bearing: complete specifications & equivalents
The 2217 is a ISO 15 radial bearing sized 85 x 150 x 36 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 85 mm |
| Outer diameter D | 150 mm |
| Width B | 36 mm |
| Seal / shield | open |
| Basic dynamic load rating C | 58.5 kN |
| Basic static load rating C0 | 23.6 kN |
| Fatigue load limit Pu | 1.5 kN |
| Limiting speed (mechanical) | 3800 rpm |
| Mass | 2560 g |
| Manufacturer designation | 2217S |
| Standard | ISO 15 |
| Catalog version | CAT. No. 2203-3/E 2024 |
| Last verified | 2026-09-25 |
Source: catalog reference (CAT. No. 2203-3/E 2024) · extracted 2026-09-25
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (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 & 2200-series range
| Bore d | 3.346 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 1.417 in |
| ISO bore code | 17 |
| Radial section height (D−d)/2 | 32.5 mm |
| Smallest bore in 2200-series | 10 mm |
| Largest outer diameter in 2200-series | 200 mm |
| Width range across 2200-series | 14–53 mm |
| Bore position in 2200-series (smallest first) | 18 of 23 |
| Bore above smallest 2200-series size | 75 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 2217 model number is decoded
In the 2200-series (ISO 15 dimension series) the leading digits 22 mark a double-row self-aligning ball bearing and the last two digits encode the bore: 2217 carries bore code 17 = 85 mm. Outside diameter 150 mm and width 36 mm follow the ISO 15 general plan. The cylindrical bore fits directly on a machined shaft seat; a tapered-bore K variant is available for adapter-sleeve mounting. Two rows of balls run on a common sphered outer raceway, allowing the inner ring to pivot and compensate for shaft deflection or housing misalignment.
Typical equipment & failure modes
Common applications
- hoist, winch and crane drums
- heavy conveyor drive shafts
- pulp, paper and steel mill machinery
- heavy industrial drive shafts
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- cage wear or fracture from sustained vibration or shock loading
- false brinelling from vibration while the shaft is stationary
Selection pitfalls — read before you substitute
- Mount this 85 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 22xx wide-section at 85 mm bore adds load capacity through increased 36 mm width; the wider ring needs a wider housing seat and may reduce limiting speed versus a 1217.
- The open 2217 has no lubricant retention: grease escapes and contaminants migrate straight into the 85×150×36 mm raceway, so specify a sealed arrangement for dusty or washdown duty.
- Open bearings tolerate the highest speeds in the 2200-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 2217 units.
- The self-aligning feature compensates for static misalignment and shaft deflection, not for poor initial alignment — always align shaft and housing as accurately as possible before fitting 2217.
Frequently asked questions
What are the dimensions of a 2217 self-aligning ball bearing?
A 2217 self-aligning ball bearing has a 85 mm bore, 150 mm outer diameter and 36 mm width, per ISO 15 boundary dimensions. This is the cylindrical-bore version; a tapered-bore K variant is available for adapter-sleeve mounting.
How does the 2217 bore code work?
The last two digits of 2217 are bore code 17, giving 17 × 5 = 85 mm bore. The 150 mm outside diameter and 36 mm width follow the ISO 15 diameter series, not the bore code alone.
What does the open suffix mean on 2217?
A bare 2217 designation means open: no shields or seals, normal CN radial clearance and P0 normal tolerance unless further suffixes are ordered. The application must supply and retain the lubrication.
How does the 2200 compare with other self-aligning series at the same 85 mm bore?
The 22xx is the wide light section: 150×36 mm with a 32.5 mm radial section at 85 mm bore, wider than a 1217 for higher load capacity at the cost of speed.
Reviewed & verified by the MPN Base engineering desk against source catalog CAT. No. 2203-3/E 2024 on 2026-09-25. Read our editorial & correction policy.