Inch Tapered Roller Bearings
387A/383A Inch Tapered Roller Bearing
57.15 × 100 × 21 mm
387A/383A is a inch tapered roller bearing from the INCH-13 series with a 57.15 mm bore, a 100 mm outside diameter and a 21 mm overall width. It has a dynamic load rating of 70,200 N and a static load rating of 86,850 N and a speed rating of 4,500 rpm (oil lubrication), weighing about 0.66 kg. The radial cross-section (D − d) is 42.85 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
387A/383A Specifications
| Cone / Cup No. | 387A/383A |
|---|---|
| d (Bore) | 57.15 mm |
| D (Outer Dia.) | 100 mm |
| T (Overall Width) | 21 mm |
| B (Cone Width) | 21.946 mm |
| C (Cup Width) | 17.826 mm |
| Dynamic Load | 70,200 N |
| Static Load | 86,850 N |
| Max. RPM | 4,500 |
| Weight | 0.66 kg |
| Series | Inch Series Tapered Roller Bearings — Range 13 (57.15mm–60.325mm bore) |
Other Bearings with 57.15 mm Bore
| Bearing No. | Series | D (Outer Dia.) mm | Dynamic Load N |
|---|---|---|---|
| 387/382A | INCH-12 | 96.838 | 70,200 |
| 387A/382A | INCH-12 | 96.838 | 70,200 |
| 387AS/382A | INCH-12 | 96.838 | 70,200 |
| 387S/382A | INCH-12 | 96.838 | 70,200 |
| 387A/382S | INCH-12 | 96.838 | 70,200 |
| 28682/28622 | INCH-13 | 97.63 | 79,650 |
| 387A/382 | INCH-13 | 98.425 | 70,200 |
| 462/453X | INCH-13 | 104.775 | 103,500 |
Neighbouring Sizes in the INCH-13 Series
387A/383A — Frequently Asked Questions
What are the dimensions of the 387A/383A bearing?
The 387A/383A has a bore (d) of 57.15 mm, an outside diameter (D) of 100 mm and a overall width of 21 mm, so it is written 57.15 × 100 × 21 mm.
What is the load rating of the 387A/383A?
Dynamic load rating 70,200 N and static load rating 86,850 N. The speed rating is 4,500 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Which other bearings have the same 57.15 mm bore as the 387A/383A?
Other inch tapered roller bearings with a 57.15 mm bore include 387/382A (96.838 mm OD), 387A/382A (96.838 mm OD), 387AS/382A (96.838 mm OD), 387S/382A (96.838 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 387A/383A bearing across India?
Yes. Logass Trade Centre supplies the 387A/383A 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 inch 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 387A/383A?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.