Deep Groove Ball Bearings
4308 Deep Groove Ball Bearing
40 × 90 × 33 mm
4308 is a deep groove ball bearing from the 4300 series with a 40 mm bore, a 90 mm outside diameter and a 33 mm width. It has a dynamic load rating of 50,310 N and a static load rating of 40,500 N and a speed rating of 6,030 rpm (oil lubrication), weighing about 0.95 kg. The radial cross-section (D − d) is 50 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
4308 Specifications
| Bearing No. | 4308 |
|---|---|
| d (Bore) | 40 mm |
| D (Outer Dia.) | 90 mm |
| B (Width) | 33 mm |
| Dynamic Load | 50,310 N |
| Static Load | 40,500 N |
| Max. RPM | 6,030 |
| Weight | 0.95 kg |
| Series | 4300 Series Double Row Deep Groove Ball Bearings |
4308 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the 4300 series page.
4308-ZZ
metal shields on both sides
4308-2RS
rubber seals on both sides
4308 C3
radial clearance larger than normal
4308-2RS C3
sealed, with C3 clearance
4308 N
snap ring groove in the outer ring
4308 M
machined brass cage
Neighbouring Sizes in the 4300 Series
4308 — Frequently Asked Questions
What are the dimensions of the 4308 bearing?
The 4308 has a bore (d) of 40 mm, an outside diameter (D) of 90 mm and a width of 33 mm, so it is written 40 × 90 × 33 mm.
What is the load rating of the 4308?
Dynamic load rating 50,310 N and static load rating 40,500 N. The speed rating is 6,030 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 4308 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 4308-ZZ (metal shields on both sides), 4308-2RS (rubber seals on both sides), 4308 C3 (radial clearance larger than normal), 4308-2RS C3 (sealed, with C3 clearance). Tell us the exact designation you need in a quote request.
Which other bearings have the same 40 mm bore as the 4308?
Other deep groove ball bearings with a 40 mm bore include 6808 (52 mm OD), 6908 (62 mm OD), 6008 (68 mm OD), 16008 (68 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 4308 bearing across India?
Yes. Logass Trade Centre supplies the 4308 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 4308?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.