3780-3720 Truck Trailer Bearing 3780/20 Roller Bearing 4T-3780/3720
Inside Diameter: 50.800 mm
Outside Diameter: 93.264 mm
Thickness: 30.162mm
Demensions: 50.800×93.264×30.162mm
Weight: 0.84 KG
Clearance: C0 (CN)
3780/20 Truck Bearing Specification:
3780-3720 is the most basic and most widely used type of taper roller bearing.
It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring).
3780/20 roller bearing is typically mounted in opposing pairs on a shaft.
Example applications for 4T-3780/3720 taper roller bearing
1. Automotive
2. Trailers and caravans
3. Agricultural
4. Gearboxes/differentials
3780-3720 Roller Bearing Data Sheet:
| New Model | 3780-3720, 3780/20, 4T-3780/3720 |
| Dimension | 50.800×93.264×30.162mm |
| Weight | 0.84kg |
| Part Name | Taper Roller Bearing |
| Seal Type | Open, Without Seal |
| Type | Inch taper roller bearing, imperial roller bearing |
| Cage | Steel Cage |
| Package | Single Carton Box / Pallet / Wooden case |
| Material | Gcr15 Chrome Steel (51200 steel) |
| Precision Rating | ABEC-1 to ABEC-5 |
| Vibration and Noise | Z1V1 / Z2V2 / Z3V3 |
| Brand | NTN or other brands |
| HS Code | 8482200000 |
| Origin | Japan |
Related Imperial Roller Bearing Model List:
| Model Number | Size (mm) | Weight (kg) |
| 18790/18723 | 50.800×88.900×20.638 | 0.480 |
| 368/362A | 50.800×88.900×20.638 | 0.510 |
| 368A/362A | 50.800×88.900×20.638 | 0.500 |
| 370A/362A | 50.800×88.900×20.638 | 0.490 |
| 368A/362AX | 50.800×88.900×23.812 | 0.550 |
| 28580/28520 | 50.800×89.980×24.750 | 0.660 |
| 368/362 | 50.800×90.000×20.000 | 0.520 |
| 368/363 | 50.800×90.000×20.000 | 0.550 |
| 368A/362 | 50.800×90.000×20.000 | 0.510 |
| 370A/362A | 50.800×90.000×20.000 | 0.500 |
| 28580/28521 | 50.800×92.075×24.608 | 0.710 |
| 28580/28523 | 50.800×92.075×27.780 | 0.760 |
| 375/374 | 50.800×93.264×20.638 | 0.590 |
| 375-S/374 | 50.400×93.264×20.638 | 0.590 |
| 375/3720 | 50.800×93.264×26.988 | 0.700 |
| 375/3730 | 50.800×93.264×26.988 | 0.720 |
| 3775/3720 | 50.800×93.264×30.162 | 0.850 |
| 3780/3720 | 50.800×93.264×30.162 | 0.840 |
| 3780/3730 | 50.800×93.264×30.162 | 0.850 |
| 3784/3720 | 50.800×93.264×30.162 | 0.820 |
| 3784/3727 | 50.800×93.662×30.162 | 0.830 |
Questions buyers ask when 3780-3720 and 3780/20 is still under review
When is 3780-3720 and 3780/20 worth comparing against nearby taper roller bearings options?
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.
What details usually matter before approving 3780-3720 and 3780/20 for repeat supply?
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.
Which next step usually helps after 3780-3720 and 3780/20 is shortlisted?
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.
Why keep a supporting guide linked beside 3780-3720 and 3780/20?
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.
Shipping Method:
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
Payment Terms:
We accept T/T, W/U, PAYPAL, L/C etc
Buyer FAQ
Questions buyers ask before choosing the next bearing option
What should I confirm before ordering 3780-3720 Truck Trailer Bearing 3780/20 Roller Bearing 4T-3780/3720?
Confirm the bearing number, bore size, outside diameter, width, seal or shield type, cage material, clearance, precision level, quantity, and application. These details help prevent a size match from becoming a performance mismatch.
Can this bearing be matched for replacement or repeat supply?
Yes. Replacement and repeat orders are easier when the original marking, measured dimensions, photos, application, and quantity are available. If the marking is unclear, the team can start from the size and working condition.
Which product family does this bearing belong to?
This item is handled within the Taper Roller Bearings family. Comparing the family page can help buyers review similar sizes, seal options, load direction, and related bearing choices before requesting a quote.
What affects price and lead time for this bearing?
Price and lead time can change with quantity, stock availability, precision grade, clearance, material, cage, seal or shield type, lubrication, packaging, and whether the order needs standard matching or custom production.
How is this bearing checked before delivery?
Inspection can include material review, dimensional measurement, noise and vibration checks, surface and crack checks, visual review, and packaging inspection according to the confirmed order requirements.
Need help checking fit, price, or lead time? Request a bearing quote
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