Tapered Roller Bearings
30308 Tapered Roller Bearing
40 × 90 × 25.25 mm
30308 is a tapered roller bearing from the 303 series with a 40 mm bore, a 90 mm outside diameter and a 25.25 mm overall width. It has a dynamic load rating of 82,350 N and a static load rating of 91,800 N and a speed rating of 5,310 rpm (oil lubrication), weighing about 0.769 kg. The radial cross-section (D − d) is 50 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
30308 Specifications
| Bearing No. | 30308 |
|---|---|
| d (Bore) | 40 mm |
| D (Outer Dia.) | 90 mm |
| T (Overall Width) | 25.25 mm |
| B (Cone Width) | 23 mm |
| C (Cup Width) | 20 mm |
| Dynamic Load | 82,350 N |
| Static Load | 91,800 N |
| Max. RPM | 5,310 |
| Weight | 0.769 kg |
| Series | 303 Series Single Row Tapered Roller Bearings |
30308 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the 303 series page.
30308 P6
higher running accuracy (ISO class 6)
30308 M
machined brass cage
Neighbouring Sizes in the 303 Series
30308 — Frequently Asked Questions
What are the dimensions of the 30308 bearing?
The 30308 has a bore (d) of 40 mm, an outside diameter (D) of 90 mm and a overall width of 25.25 mm, so it is written 40 × 90 × 25.25 mm.
What is the load rating of the 30308?
Dynamic load rating 82,350 N and static load rating 91,800 N. The speed rating is 5,310 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 30308 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 30308 P6 (higher running accuracy (ISO class 6)), 30308 M (machined brass cage). Tell us the exact designation you need in a quote request.
Which other bearings have the same 40 mm bore as the 30308?
Other tapered roller bearings with a 40 mm bore include 32008 (68 mm OD), 33008 (68 mm OD), 33108 (75 mm OD), 30208 (80 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 30308 bearing across India?
Yes. Logass Trade Centre supplies the 30308 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 30308?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.