387A / 382A bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 387A / 382A. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
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Find by measured dimensions
Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.
387A / 382A dimensions and recorded technical data
The recorded 387A / 382A base designation measures 57.15×96.838×21.946 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from KOYO. It does not assign the same dimensions or operating ratings to every suffix.
The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 4 recorded variants are listed. A dash means the value is missing, not zero.
Catalogue parameters for 387A / 382A
Choose the complete brand and marking before reading a value. These source-labelled records add dimensions, construction and engineering properties where they were recorded; a shared model number does not establish interchangeability.
Units, ranges and minimum/maximum qualifiers are retained. The data is a dated catalogue reference, not a certified drawing, a complete current specification or an operating approval.
KOYO 387A/382A — 23 recorded parameters
Tapered roller bearing
Reference: JTEKT / Koyo catalogue; source snapshot 2026-09-02.
Keep total assembly width distinct from inner- and outer-ring widths. The same nominal bore does not establish a matching cup/cone set.
Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.
Technical Data
| Parameter | Source symbol | Recorded value |
|---|---|---|
| d | Not separately recorded | 57.150 mm |
| D | Not separately recorded | 96.838 mm |
| T | Not separately recorded | 21.000 mm |
| B | Not separately recorded | 21.946 mm |
| C | Not separately recorded | 15.875 mm |
| R(Min.) | Not separately recorded | 3.6 mm |
| R1(Min.) | Not separately recorded | 0.8 mm |
| Basic Load Ratings : Cr | Not separately recorded | 101 kN |
| Basic Load Ratings : C0R | Not separately recorded | 101 kN |
| Fatigue Load Limit : Cu | Not separately recorded | 15.3 kN |
| Limiting Speeds(Grease Lub.) | Not separately recorded | 3900 min-1 |
| Limiting Speeds(Oil Lub.) | Not separately recorded | 5200 min-1 |
| Load Center Spread : A | Not separately recorded | 17.4 mm |
| Constant :E | Not separately recorded | 0.35 |
| Axial Load Factors : Y1 | Not separately recorded | 1.69 |
| Axial Load Factors : Y0 | Not separately recorded | 0.93 |
| Da | Not separately recorded | 69.0 mm |
| Db | Not separately recorded | 62.0 mm |
| Da | Not separately recorded | 89.0 mm |
| Db | Not separately recorded | 92.0 mm |
| Ra(Max.) | Not separately recorded | 3.6 mm |
| Rb(Max.) | Not separately recorded | 0.8 mm |
| Mass(Refer.) | Not separately recorded | 0.603 kg |
SKF 387 A/382 A — 52 recorded parameters
Single row tapered roller bearing
Reference: SKF product catalogue; source snapshot 2026-09-02.
Keep total assembly width distinct from inner- and outer-ring widths. The same nominal bore does not establish a matching cup/cone set.
Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.
Dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | Not separately recorded | 57.15 mm |
| Outside diameter | Not separately recorded | 96.838 mm |
| Width, total | Not separately recorded | 21.946 mm |
| Width, inner ring | Not separately recorded | 21.946 mm |
| Width, outer ring | Not separately recorded | 15.875 mm |
| Contact angle | Not separately recorded | 13.3 ° |
Performance
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Basic dynamic load rating | Not separately recorded | 100.0 kN |
| Basic static load rating | Not separately recorded | 102.0 kN |
| Reference speed | Not separately recorded | 5600.0 r/min |
| Limiting speed | Not separately recorded | 6700.0 r/min |
| SKF performance class | Not separately recorded | SKF Explorer |
Properties
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Bearing part | Not separately recorded | Complete bearing |
| Number of rows | Not separately recorded | 1 |
| Locating feature, bearing outer ring | Not separately recorded | Without |
| Bore type | Not separately recorded | Cylindrical |
| Cage | Not separately recorded | Sheet metal |
| Arrangement of contact angle (double-row bearing) | Not separately recorded | Not applicable |
| Matched arrangement | Not separately recorded | No |
| Coating | Not separately recorded | Without |
| Sealing | Not separately recorded | Without |
| Relubrication feature | Not separately recorded | Without |
| Unit system | Not separately recorded | Inch |
| Indicative carbon footprint for new product | Not separately recorded | 2.1 kg CO 2 e |
Logistics
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Product net weight | Not separately recorded | 0.576 kg |
Engineering — Engineering specifications
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Dimension series | Not separately recorded | 385 |
Engineering — Dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 57.15 mm |
| Outside diameter | D | 96.838 mm |
| Bearing width, total | T | 21 mm |
| Shoulder diameter of inner ring | d 1 | ≈ 74.23 mm |
| Width of inner ring | B | 21.946 mm |
| Width of outer ring | C | 15.875 mm |
| Chamfer dimension of inner ring | r 1,2 | min. 3.5 mm |
| Chamfer dimension of outer ring | r 3,4 | min. 0.8 mm |
| Distance side face to pressure point | a | 17.4 mm |
Engineering — Abutment dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Diameter of shaft abutment | d a | max. 65 mm |
| Diameter of shaft abutment | d b | min. 70 mm |
| Diameter of housing abutment | D a | min. 87 mm |
| Diameter of housing abutment | D a | max. 90 mm |
| Diameter of housing abutment | D b | min. 91 mm |
| Minimum width of space required in housing on large side face | C a | min. 5 mm |
| Minimum width of space required in housing on small side face | C b | min. 5 mm |
| Radius of shaft fillet | r a | max. 3.5 mm |
| Radius of housing fillet | r b | max. 0.8 mm |
Engineering — Calculation data
| Parameter | Source symbol | Recorded value |
|---|---|---|
| SKF performance class | Not separately recorded | SKF Explorer |
| Basic dynamic load rating | C | 100 kN |
| Basic static load rating | C 0 | 102 kN |
| Fatigue load limit | P u | 11.6 kN |
| Reference speed | Not separately recorded | 5600 r/min |
| Limiting speed | Not separately recorded | 6700 r/min |
| Limiting value | e | 0.35 |
| Calculation factor | Y | 1.7 |
| Calculation factor | Y 0 | 0.9 |
No recorded variant matches these filters. Clear a filter to see other records; no substitute has been inferred.
| Brand / full designation | Named dimensions (mm / in) | Dynamic C (kN) | Static C0 (kN) | Reference speed (rpm) | Limiting speed (rpm) | Mass (kg / g) |
|---|---|---|---|---|---|---|
| SKF387 A/382 ASingle row tapered roller bearing |
| 100 kN | 102 kN | 5600 rpm | 6700 rpm | 0.576 kg576 g |
| TIMKEN387A / 382ATapered roller bearing |
| 108 kN | 107 kN | — | — | 0.59 kg590 g |
| KOYO387A/382ATapered roller bearing |
| 101 kN | 101 kN | — | 3900 rpmLimiting Speeds(Grease Lub.): 3900 min-1Limiting Speeds(Oil Lub.): 5200 min-1 | 0.603 kg603 g |
| SKF387 A/382 A/VA983Special single row tapered roller bearing |
| 81.6 kN | 93 kN | 5000 rpm | 6700 rpm | 0.598 kg598 g |
Compare recorded seals, clearance, precision and materials
Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.
| Brand / designation | Closure | Original precision | Clearance | Cage | Material | Lubricant |
|---|---|---|---|---|---|---|
| SKF 387 A/382 A | Without | Not recorded | Not recorded | Sheet metal | Not recorded | None |
| TIMKEN 387A / 382A | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| KOYO 387A/382A | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 387 A/382 A/VA983 | Without | Not recorded | Not recorded | Sheet metal | Not recorded | None |
How to compare these values
- Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
- Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
- C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
- Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
- A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.
Related prefix matches — other model numbers may appear
These discovery results can contain a longer number or a different component. They are not specifications for the requested exact model. Open the complete product to inspect its original geometry.
Check the drawing before substituting
Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.
Reference basis & data limits
Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.
Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.