Tapered Roller Bearings
30321 Tapered Roller Bearing
105 × 225 × 53.5 mm
30321 is a tapered roller bearing from the 303 series with a 105 mm bore, a 225 mm outside diameter and a 53.5 mm overall width. It has a dynamic load rating of 391,500 N and a static load rating of 477,000 N and a speed rating of 2,070 rpm (oil lubrication), weighing about 9.79 kg. The radial cross-section (D − d) is 120 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
30321 Specifications
| Bearing No. | 30321 |
|---|---|
| d (Bore) | 105 mm |
| D (Outer Dia.) | 225 mm |
| T (Overall Width) | 53.5 mm |
| B (Cone Width) | 49 mm |
| C (Cup Width) | 41 mm |
| Dynamic Load | 391,500 N |
| Static Load | 477,000 N |
| Max. RPM | 2,070 |
| Weight | 9.79 kg |
| Series | 303 Series Single Row Tapered Roller Bearings |
30321 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the 303 series page.
Neighbouring Sizes in the 303 Series
30321 — Frequently Asked Questions
What are the dimensions of the 30321 bearing?
The 30321 has a bore (d) of 105 mm, an outside diameter (D) of 225 mm and a overall width of 53.5 mm, so it is written 105 × 225 × 53.5 mm.
What is the load rating of the 30321?
Dynamic load rating 391,500 N and static load rating 477,000 N. The speed rating is 2,070 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 30321 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 30321 P6 (higher running accuracy (ISO class 6)), 30321 M (machined brass cage). Tell us the exact designation you need in a quote request.
Which other bearings have the same 105 mm bore as the 30321?
Other tapered roller bearings with a 105 mm bore include 32021 (160 mm OD), 33021 (160 mm OD), 33121 (175 mm OD), 30221 (190 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 30321 bearing across India?
Yes. Logass Trade Centre supplies the 30321 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 tapered 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 30321?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.