Cone Number: 3979
Cup Number: 3920
Inner Diameter (d): 57.150mm/ 2.25 inch
Outer Diameter (D): 112.712mm/ 4.4375 inch
Cone Width (B): 30.048mm/ 1.1830 inch
Bearing Width (T): 30.163mm/ 1.1875 inch
Mass: 1.37kg/ 3.02lb
Category: single row taper roller bearing
3979/3920 bearing features a single row roller bearing.
As for this bearing,
Cone Number: 3979
Cup Number: 3920
Inner Diameter (d): 57.150mm/ 2.25 inch
Outer Diameter (D): 112.712mm/ 4.4375 inch
Cone Width (B): 30.048mm/ 1.1830 inch
Bearing Width (T): 30.163mm/ 1.1875 inch
Mass: 1.37kg/ 3.02lb
Cage: stamped steel
Bearing Material: bearing steel
Precision: standard precision ABEC1
Category: single row taper roller bearing
Interchange Numbers: 3979 – 3920, 3979-3920, 3979/20, 3979-99401
| Bearing Model | Dimensions (d*D*T) | Mass (kg) |
| 42346/42584 | 87.960×148.430×28.575 | 1.960 |
| 42346/42587 | 87.960×149.225×31.750 | 2.100 |
| LL217849/LL217810 | 88.900×121.442×15.083 | 0.470 |
| L217849/L217810 | 88.900×123.825×20.638 | 0.740 |
| L217849/L217813 | 88.900×127.000×20.638 | 0.850 |
| 42350/42584 | 88.900×148.430×28.575 | 1.930 |
| 42350/42587 | 88.900×149.225×31.750 | 2.070 |
| 593A/JM719113 | 88.900×150.000×35.966 | 2.440 |
| 593/JM719113 | 88.900×150.000×35.966 | 2.470 |
| 593/593X | 88.900×150.000×35.992 | 2.460 |
| 593/592A | 88.900×152.400×39.688 | 2.750 |
| 593A/592A | 88.900×152.400×39.688 | 2.700 |
| HM518445/HM518410 | 88.900×152.400×39.688 | 2.790 |
| 759/752A | 88.900×159.995×47.625 | 3.940 |
| 6580/6525X | 88.900×160.000×53.975 | 4.520 |
| 69350X/69630 | 88.900×160.096×30.124 | 2.400 |
| 759/752 | 88.900×161.925×47.625 | 4.070 |
| 766/752 | 88.900×161.925×47.625 | 4.020 |
| 6580/6535 | 88.900×161.925×53.975 | 4.660 |
| 6580/6536 | 88.900×161.925×53.975 | 4.680 |
| 679/672 | 88.900×168.275×41.275 | 3.980 |
| 759/753 | 88.900×168.275×47.625 | 4.540 |
| 766/753 | 88.900×168.275×47.625 | 4.490 |
| 850/832 | 88.900×168.275×53.975 | 5.040 |
Q1: What loads can it (single row taper roller bearing) handle?
A1: It handles heavy radial loads and axial (thrust) loads in one direction; axial capacity rises with larger contact angles.
Q2: Is the bearing separable?
A2: Yes. The cone (inner ring, rollers, cage) separates from the cup (outer ring) for easier mounting and maintenance.
Q3: What applications suit this bearing?
A3: Use it in gearboxes, axles, transmissions, heavy machinery, and any shaft arrangement needing combined radial and axial support.
Q4: What materials and cage types are typical?
A4: Rings and rollers use hardened bearing steel; cages commonly use steel.
Comparison helps when dimensional fit is only part of the decision and load direction, sealing, clearance, speed, temperature, or repeat-order stability still need to be confirmed. Reviewing one or two nearby options early usually reduces sourcing mistakes later.
Buyers normally confirm the part reference, main dimensions, application, speed range, operating environment, sealing needs, and any packaging or marking requirements. That gives the supplier a cleaner basis for confirming availability and suitable alternatives.
A quick review of Taper Roller Bearings, one more commercial destination, and one practical guide usually saves time. That combination helps separate simple replacement orders from jobs that still need fit or application review.
Because it makes later decisions faster. When sizing notes, application cues, and nearby options stay close to the product, engineering, purchasing, and maintenance teams can revisit the same logic without starting the review from zero.
1. Sea shipping for mass cargos (GW > 500KGS)
2. Air shipping (GW between 100KGS – 500 KGS)
3. Express, such as DHL, TNT, Fedex, UPS for small cargos ( GW < 100KGS)
4. If you have shipping agent in China, we can send goods to your shipping agent's warehouse
We accept T/T, W/U, PAYPAL, L/C etc
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