INA
Angular Contact Ball Bearing
From US$76.73
Excl. VAT| Spec | Price | Quantity |
|---|---|---|
| ina:3812-2RS | US$76.73 |
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
INA 3812-2RS Angular Contact Ball Bearing supports combined radial and one-direction axial load through a defined contact angle. It is a high-speed, high-precision choice for pumps, compressors, machine tools, and spindle-related positions where axial rigidity and rotational accuracy matter.
The inner and outer ring raceways are offset to create a contact angle. Single-row, double-row, or matched arrangements can be used to meet axial load direction, preload, and rigidity requirements.
Select by contact angle, arrangement, preload, precision class, axial load direction, and operating speed.
| Symbol | Value | Description |
|---|---|---|
| d | 60 mm | Bore diameter |
| D | 78 mm | Outside diameter |
| B | 14 mm | Width |
| Cr | 14.200 N | Basic dynamic load rating, radial |
| C0r | 17.100 N | Basic static load rating, radial |
| Cur | 970 N | Fatigue load limit, radial |
| nG | 4.050 1/min | Limiting speed |
| ≈m | 0,15 kg | Weight |
| Symbol | Value | Description |
|---|---|---|
| rmin | 0,3 mm | Minimum chamfer dimension |
| D1 | 72,88 mm | Shoulder diameter outer ring |
| D2 | 74,72 mm | Caliber diameter outer ring |
| d1 | 67,1 mm | Shoulder diameter inner ring |
| d2 | 65,68 mm | Caliber diamter inner ring |
| a | 38,1 mm | Distance between the apexes of the pressure cones |
| α | 25 ° | Contact angle |
| Item | Code | Description |
|---|---|---|
| Design variant | B | Bearing without filling slot |
| Sealing | 2RS | Contact seal on both sides |
| Cage | TVH | Solid cage made of glass-fiber reinforced polyamide PA66 |
| Tolerance class | PN | Normal (PN) |
| Dimensional / heat stabilization | SN | Rings dimensional stabilized up to 120° |
| Lubricant | GA13 | Ball bearing and insert bearing grease |
| Axial internal clearance | CN | Group N (CN) |
| Symbol | Value | Description |
|---|---|---|
| da min | 62 mm | Minimum diameter shaft shoulder |
| Da max | 76 mm | Maximum diameter of housing shoulder |
| ra max | 0,3 mm | Maximum fillet radius |
| Symbol | Value | Description |
|---|---|---|
| Tmin | -20 °C | Operating temperature min. |
| Tmax | 100 °C | Operating temperature max. |
The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:
38122RS3812 2RS3812INA38122RSINA 3812 2RSINA3812 2RSINA 38122RSINA3812From US$76.73
Excl. VAT| Spec | Price | Quantity |
|---|---|---|
| ina:3812-2RS | US$76.73 |
INA
203-XL-KRR Deep Groove Ball Bearing
US$8.69
Excl. VAT
In stock (202)
INA
203-XL-KRR-AH02 Deep Groove Ball Bearing
US$12.27
Excl. VAT
In stock (69)
INA
203-XL-NPP-B Self-Aligning Deep Groove Ball Bearing
US$6.47
Excl. VAT
In stock (216)
INA
30/7-2RSR-HLC20 Deep Groove Ball Bearing
US$24.70
Excl. VAT
In stock (5)
INA
3003-2RS Angular Contact Ball Bearing
US$25.55
Excl. VAT
In stock (7)
INA
3004-2RS Angular Contact Ball Bearing
US$25.04
Excl. VAT
In stock (72)
INA
3004-2Z Angular Contact Ball Bearing
US$13.54
Excl. VAT
In stock (1)
INA
3005-2RS Angular Contact Ball Bearing
US$30.15
Excl. VAT
In stock (3)