Spherical Roller Bearings
21311 K Bearing
55 × 120 × 29 mm
Also written 21311/K
21311 K is the 21311 spherical roller bearing (55 mm bore, 120 mm outside diameter) with the option K. The standard-design dimensions below come from our 213 series table.
21311 K Specifications
Standard-design values for 21311. Load and speed ratings can differ for sealed or special versions; we confirm them on quotation.
| Bearing No. | 21311 |
|---|---|
| d (Bore) | 55 mm |
| D (Outer Dia.) | 120 mm |
| B (Width) | 29 mm |
| Dynamic Load | 130,500 N |
| Static Load | 146,700 N |
| Max. RPM | 2,970 |
| Weight | 1.71 kg |
| Series | 213 Series Double Row Spherical Roller Bearings |
Reading the Designation 21311 K
| 21311 | Base size: spherical roller bearing, 55 × 120 × 29 mm. |
|---|---|
| K | tapered bore, taper 1:12 |
Suffix meanings vary slightly between manufacturers (SKF, FAG, NTN, NSK and others each have their own codes), so we always confirm the exact designation before supplying.
Other Bearings with a 55 mm Bore
21311 K — Frequently Asked Questions
What are the dimensions of the 21311 K bearing?
The base size 21311 measures 55 × 120 × 29 mm (bore × outside diameter × width). Suffixes such as K change the sealing, clearance, cage or special treatment but not the boundary dimensions of the standard design.
What does 21311 K mean?
21311 is the base size. K: tapered bore, taper 1:12. Suffix meanings can differ slightly between manufacturers, so confirm the exact designation with us before ordering.
Can you supply the 21311 K bearing across India?
Yes. Share the exact designation, quantity and preferred brand through the quote button and our technical team will confirm availability and pricing within one business day.
Can’t find your size?
We supply sizes, brands and special versions of spherical roller bearings that are not listed on this page. Type the exact size or designation you need and send it to us for a quote.
Need pricing on 21311 K?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.