Spherical Roller Bearings
21304 Spherical Roller Bearing
20 × 52 × 15 mm
21304 is a spherical roller bearing from the 213 series with a 20 mm bore, a 52 mm outside diameter and a 15 mm width. It has a dynamic load rating of 30,600 N and a static load rating of 30,150 N and a speed rating of 8,100 rpm (oil lubrication), weighing about 0.21 kg. The radial cross-section (D − d) is 32 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
21304 Specifications
| Bearing No. | 21304 |
|---|---|
| d (Bore) | 20 mm |
| D (Outer Dia.) | 52 mm |
| B (Width) | 15 mm |
| Dynamic Load | 30,600 N |
| Static Load | 30,150 N |
| Max. RPM | 8,100 |
| Weight | 0.21 kg |
| Series | 213 Series Double Row Spherical Roller Bearings |
21304 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the 213 series page.
Neighbouring Sizes in the 213 Series
21304 — Frequently Asked Questions
What are the dimensions of the 21304 bearing?
The 21304 has a bore (d) of 20 mm, an outside diameter (D) of 52 mm and a width of 15 mm, so it is written 20 × 52 × 15 mm.
What is the load rating of the 21304?
Dynamic load rating 30,600 N and static load rating 30,150 N. The speed rating is 8,100 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 21304 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 21304 C3 (radial clearance larger than normal), 21304 K (tapered bore (1:12)), 21304 K30 (tapered bore (1:30)), 21304/CA (machined brass cage, one piece). Tell us the exact designation you need in a quote request.
Do you supply the 21304 bearing across India?
Yes. Logass Trade Centre supplies the 21304 Pan India with technical support, from single pieces to bulk orders. Use the quote button to share your quantity and brand preference.
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 the 21304?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.