Same-model Comparison
Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
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You entered 388A-382. This table explores the base group 388; it does not preserve or approve every requested suffix. Search your complete marking first →
One base designation across loaded brands
Exact designations rank first. Dimensions, suffixes and other technical differences remain visible so the result is not mistaken for an interchangeability declaration.
“388” across 2 loaded brands
The base designation is shared, but the loaded boundary dimensions do not agree. Use Custom Compare when you want to choose exact suffix variants yourself.
Brand differences at a glance
| Parameter | TIMKEN388A / 38257.531 × 98.425 × 21 mm | KOYO388A/382A57.531 × 96.838 × 21.946 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 388A / 382 | 388A/382A |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | 385 | — |
| Bore diameterd | 57.531 mm | 57.531 mm |
| Outside diameterD | 98.425 mm | 96.838 mm |
| WidthB | 21 mm | 21.946 mm |
| Basic dynamic load ratingC | 108 kN | 101 kN |
| Basic static load ratingC0 | 107 kN | 101 kN |
| Fatigue load limitPu | — | 15.3 kN |
| Limiting speednG | — | 3900 r/min |
| Mass≈m | 0.64 kg | 0.597 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.65 | — |
| Y1 Factor | 1.69 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.93 | — |
| E Factor | 0.35 | — |
| Cg Factor | 0.0859 | — |
| Classification | ||
| Official Category Path | — | Tapered roller bearings - Single-row - Inch series |
| Official Classification 1 | — | Tapered roller bearings / Single-row / Inch series |
| Manufacturer Identity | ||
| Material Number | 000000000100007516 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | 388A_382 | — |
| Inner Ring Part Number | 388A | — |
| Outer Ring Part Number | 382 | — |
| Drawing Number | A-18082 | — |
| Upc | 0053893650999 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.503 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 2.2650 in Bore | 3.8750 in OD | 0.8268 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 96.838 mm |
| T | — | 21.000 mm |
| B | — | 21.946 mm |
| C | — | 15.875 mm |
| Overall Width | 25.546 mm | — |
| R(Min.) | — | 3.6 mm |
| Radial Rating | 28,000 N | — |
| R1(Min.) | — | 0.8 mm |
| Axial Rating | 16,900 N | — |
| Basic Load Ratings : Cr | — | 101 kN |
| Dynamic Rating C1 | 108,000 N | — |
| Basic Load Ratings : C0R | — | 101 kN |
| Dynamic Rating C90 | 28,000 N | — |
| Fatigue Load Limit : Cu | — | 15.3 kN |
| Dynamic Axial Rating Ca90 | 16,900 N | — |
| Limiting Speeds(Grease Lub.) | — | 3900 min-1 |
| Dynamic Axial Rating Ca1 | 65,400 N | — |
| Limiting Speeds(Oil Lub.) | — | 5200 min-1 |
| Static Radial Rating C0 | 107,000 N | — |
| Load Center Spread : A | — | 17.4 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Constant :E | — | 0.35 |
| Static Axial Rating C0A | 111,000 N | — |
| Axial Load Factors : Y1 | — | 1.69 |
| Axial Load Factors : Y0 | — | 0.93 |
| Da | — | 89.0 mm |
| Db | — | 92.0 mm |
| Ra(Max.) | — | 3.6 mm |
| Rb(Max.) | — | 0.8 mm |
| Mass(Refer.) | — | 0.597 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.