1726211-2RS1 bearing: complete specifications & equivalents
The 1726211-2RS1 is a ISO 15 radial bearing sized 55 x 100 x 21 mm (bore x OD x width) with 2RS sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 55 mm |
| Outer diameter D | 100 mm |
| Width B | 21 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 43.6 kN |
| Basic static load rating C0 | 29 kN |
| Fatigue load limit Pu | 1.25 kN |
| Limiting speed (mechanical) | 4300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 600 g |
| Manufacturer designation | 1726211-2RS1 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-28 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-28
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 17262-series range
| Bore d | 2.165 in |
|---|---|
| Outer diameter D | 3.937 in |
| Width B | 0.827 in |
| ISO bore code | 11 |
| Radial section height (D−d)/2 | 22.5 mm |
| Smallest bore in 17262-series | 17 mm |
| Largest outer diameter in 17262-series | 110 mm |
| Width range across 17262-series | 12–22 mm |
| Bore position in 17262-series (smallest first) | 9 of 10 |
| Bore above smallest 17262-series size | 38 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6211 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6211 shares the 55x100x21 mm ISO 15 dimension-series 03 envelope and ratings within 10 %, but this SKF insert has a SPHERED outside surface for a Y-housing while 6211 has a cylindrical OD for a machined bore — envelope/load match, never a drop-in substitute. |
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 1726211-2RS1 model number is decoded
The 17262 series order number 1726211-2RS1 is a SKF insert bearing (Y-bearing) for a 55 mm shaft: insert bearing with a standard (non-extended) inner ring, built to the ISO 15 diameter-series envelope with a sphered OD of 100 mm. The unit is a capped deep-groove ball bearing to the ISO 15 03 envelope whose outer surface is sphered instead of cylindrical, so it combines a standard fit with Y-housing alignment. reading 1726xx: 172 = insert bearing with a standard-width inner ring, 6 = ISO 15 dimension series 03 with a spherically shaped outside surface for self-aligning in a Y-housing. the final two digits 11 follow the standard bore-code rule (03 = 17 mm, then x5), giving a 55 mm (code 11 x 5) bore. the -2RS1 suffix is the classic contact NBR seal on each side without add-on flingers — grease retention for life inside the sphered-OD ISO 15 envelope. Envelope 55x100x21 mm (2.165x3.937x0.827 in), outer ring 21 mm wide, C 43.6 kN, C0 29 kN, Pu 1.25 kN. The catalogue publishes a single speed ceiling, the limiting speed: 4,300 r/min; mass 600 g. Mass-to-load ratio for 1726211-2RS1: 13.761 g of catalogue mass per rated kN of C, and 10.909 g per millimetre of bore — useful when comparing executions of the same 55x100 mm envelope on the drawing. Rating split for the maintenance file: dynamic 43.6 kN (L10), static 29 kN (s0 shock check), fatigue 1.25 kN (adjusted life) — three separate uses for 1726211-2RS1, none interchangeable with another. Mounting verification on 1726211-2RS1 uses the printed catalogue procedure rather than torque guessing. Envelope arithmetic: the radial section from 55 mm bore to 100 mm OD is 22.5 mm; dividing C 43.6 kN by that section gives 1.938 kN per section millimetre, and the 21 mm overall width is 0.933x the section. Speed ceiling of 4,300 r/min is the catalogue mechanical limit for THIS execution; seal lip and flinger drag, not steel fatigue, are normally what cap it, so real fan duty is planned well below it. Standard-inner-ring note: unlike YAR/YEL/YSP inserts this 172 execution has NO shaft locking device and NO extended ring — it locates by fits like a normal sealed deep-groove ball bearing, while the sphered outside surface still provides static self-alignment inside the Y-housing. Fit note for 1726211-2RS1: because no locking device exists, shaft and housing fits do the locating work; treat the fit recommendations for sealed deep-groove bearings, and let the spherical OD pivot in the housing rather than forcing axial alignment.
Typical equipment & failure modes
Common applications
- Y-housing units on standard machined shafts
- fan and conveyor positions ordered as ISO-envelope spares
- general machinery using Y-flange and Y-pillow housings
Known failure patterns
- shaft fit wrong (no locking device exists): too loose creeps, too tight removes the residual clearance the spherical seat relies on
- VP274/B lubrication holes blocked by a misaligned housing groove starve the spherical seat during re-greasing
- water or slurry past the seal lip emulsifies the life-long grease and rusts the flinger recess
- sphered OD and spherical housing bore left dry or painted over: the static self-aligning feature freezes solid with corrosion
- two bearings of the same size but different locking styles swapped during overhaul — shaft preparation (dimples, collar space, sleeve seat) no longer matches
Selection pitfalls — read before you substitute
- No locking device means shaft preparation is everything for 1726211-2RS1: observe the fit, abutment and circlip recommendations rather than expecting screws or a collar to rescue a loose shaft.
- When ordering a like-for-like replacement, note whether the old part carried the B lubrication-hole execution: housing grooves aligned to B holes leave the non-B seal-only variant without its re-greasing path.
- The 55x100 mm envelope matching a 63-series bearing tempts substitution into a cylindrical housing — do not: the sphered OD only works in the mating spherical Y-housing bore.
- The 43.6/29 kN figures belong specifically to 1726211-2RS1; HV stainless, AG agricultural and VE495 zinc-plated variants of the same envelope publish derated values, so write the complete order number including suffixes on the purchase and maintenance records.
Frequently asked questions
What are the dimensions and catalogue data of 1726211-2RS1?
Boundary dimensions: bore 55 mm, sphered OD 100 mm, overall width 21 mm; weight 600 g. Loads: dynamic 43.6 kN, static 29 kN, fatigue 1.25 kN; the only published speed is the 4,300 r/min limiting value.
What does the designation 1726211-2RS1 mean?
reading 1726xx: 172 = insert bearing with a standard-width inner ring, 6 = ISO 15 dimension series 03 with a spherically shaped outside surface for self-aligning in a Y-housing. the final two digits 11 follow the standard bore-code rule (03 = 17 mm, then x5), giving a 55 mm (code 11 x 5) bore. the -2RS1 suffix is the classic contact NBR seal on each side without add-on flingers — grease retention for life inside the sphered-OD ISO 15 envelope.
How is axial position secured with no locking device?
Through the recommended shaft and housing fits, abutments and any snap rings per the catalogue — there are no screws, collar or sleeve. The spherical OD still supplies the static self-alignment in the Y-housing.
What do B and VP274 mean?
B denotes lubrication holes in the outer ring (only on standard-inner-ring executions); VP274 is the NBR contact-seal package on both sides. The B-2RS1/VP274 article is therefore sealed yet re-lubricatable through the housing.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-28. Read our editorial & correction policy.