Spherical Roller Bearings
21309 Spherical Roller Bearing
45 × 100 × 25 mm
21309 is a spherical roller bearing from the 213 series with a 45 mm bore, a 100 mm outside diameter and a 25 mm width. It has a dynamic load rating of 91,800 N and a static load rating of 95,400 N and a speed rating of 2,700 rpm (oil lubrication), weighing about 0.927 kg. The radial cross-section (D − d) is 55 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
21309 Specifications
| Bearing No. | 21309 |
|---|---|
| d (Bore) | 45 mm |
| D (Outer Dia.) | 100 mm |
| B (Width) | 25 mm |
| Dynamic Load | 91,800 N |
| Static Load | 95,400 N |
| Max. RPM | 2,700 |
| Weight | 0.927 kg |
| Series | 213 Series Double Row Spherical Roller Bearings |
21309 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the 213 series page.
21309 C3
radial clearance larger than normal
21309 K
tapered bore (1:12)
21309 K30
tapered bore (1:30)
21309/CA
machined brass cage, one piece
21309/W33
oil groove and holes in the outer ring
Neighbouring Sizes in the 213 Series
21309 — Frequently Asked Questions
What are the dimensions of the 21309 bearing?
The 21309 has a bore (d) of 45 mm, an outside diameter (D) of 100 mm and a width of 25 mm, so it is written 45 × 100 × 25 mm.
What is the load rating of the 21309?
Dynamic load rating 91,800 N and static load rating 95,400 N. The speed rating is 2,700 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 21309 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 21309 C3 (radial clearance larger than normal), 21309 K (tapered bore (1:12)), 21309 K30 (tapered bore (1:30)), 21309/CA (machined brass cage, one piece). Tell us the exact designation you need in a quote request.
Which other bearings have the same 45 mm bore as the 21309?
Other spherical roller bearings with a 45 mm bore include 22209 (85 mm OD), 22309 (100 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 21309 bearing across India?
Yes. Logass Trade Centre supplies the 21309 Pan India with technical support, from single pieces to bulk orders. Use the quote button to share your quantity and brand preference.
Need pricing on the 21309?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.