Self-Aligning Ball Bearings
2311 Self-Aligning Ball Bearing
55 × 120 × 43 mm
2311 is a self-aligning ball bearing from the 23 series with a 55 mm bore, a 120 mm outside diameter and a 43 mm width. It has a dynamic load rating of 67,950 N and a static load rating of 21,600 N and a speed rating of 4,410 rpm (oil lubrication), weighing about 2.1 kg. The radial cross-section (D − d) is 65 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
2311 Specifications
| Bearing No. | 2311 |
|---|---|
| d (Bore) | 55 mm |
| D (Outer Dia.) | 120 mm |
| B (Width) | 43 mm |
| Dynamic Load | 67,950 N |
| Static Load | 21,600 N |
| Max. RPM | 4,410 |
| Weight | 2.1 kg |
| Series | 23 Series Double Row Self-Aligning Ball Bearings |
2311 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the 23 series page.
Neighbouring Sizes in the 23 Series
2311 — Frequently Asked Questions
What are the dimensions of the 2311 bearing?
The 2311 has a bore (d) of 55 mm, an outside diameter (D) of 120 mm and a width of 43 mm, so it is written 55 × 120 × 43 mm.
What is the load rating of the 2311?
Dynamic load rating 67,950 N and static load rating 21,600 N. The speed rating is 4,410 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 2311 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 2311 K (tapered bore (1:12)), 2311 C3 (radial clearance larger than normal), 2311-2RS (rubber seals on both sides). Tell us the exact designation you need in a quote request.
Which other bearings have the same 55 mm bore as the 2311?
Other self-aligning ball bearings with a 55 mm bore include 1211 (100 mm OD), 2211 (100 mm OD), 1311 (120 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 2311 bearing across India?
Yes. Logass Trade Centre supplies the 2311 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 self-aligning ball 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 2311?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.