We never sell your data to third parties
Koyo 6304 2RS is a 63 series single-row deep groove ball bearing with a 20 mm bore, 52 mm OD, and 15 mm width. Double rubber seals (2RS) provide protection against contaminants. Steel cage. Used in electric motors, pumps, and general rotating machinery.
MODEL 6304 2RS
$20.95 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
Select Quantity
Typically Ships in: 1 day
Returnable:No
Bore
0.787 in / 20 mm
Brand
KOYO
Enclosure Type
Contact Seal
Harmonized Tariff Code
8482.10.50.68
Inch - Metric
Metric
Inner Race Width
0 Inch / 0 Millimeter
Internal Clearance
C0-Medium
Internal Special Features
No
Maximum Capacity / Filling Slot
No
Other Features
Deep Groove
Outer Race Width
0.591 Inch / 15 Millimeter
Outside Diameter
2.047 Inch / 52 Millimeter
Precision Class
ABEC 1 / ISO P0
Rolling Element
Ball Bearing
Snap Ring
No
Type
Single Row Ball Bearings
UNSPSC
31171504
| Bearing No. |
6304 2RS
|
|
| Boundary dimensions(mm) | d |
20
|
| D |
52
|
|
| B |
15
|
|
| r(min) |
1.1
|
|
| Basic load ratings(kN) | Cr |
19.9
|
| C0r |
7.85
|
|
| Fatigue load limit(kN) | Cu |
0.660
|
| factor | f0 |
12.3
|
| Limiting speeds(min-1) | Grease lub. |
14000
|
| Mounting dimensions(mm) | da(min) |
26.5
|
| da(max) |
27
|
|
| Da(max) |
45.5
|
|
| ra(max) |
1
|
|
| (Refer.)Mass(Open type)(kg) |
0.144
|
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
#207621
Brand
Nachi Bearing
Model
6304-2NSE9C3
#320122
Brand
SKF Bearing
Model
6304 2RSJEM
#2068061
Brand
SKF Bearing
Model
6304-2RSH
#5034134
Brand
NSK Bearings
Model
6304DDU
#278993
Brand
NTN Bearing
Model
6304LLU
#5830210
Brand
SKF Bearing
Model
6304-2RSH/C3
#2890153
Brand
Rollway
Model
6304 2RS EMQ
#830509
Brand
NTN Bearing
Model
6304LLUAC3
| Brand | PEER Bearing |
| Model | HCFS212-39-TRL |
| Brand | NTN Bearing |
| Model | CR-1252L |
| Brand | General Bearing |
| Model | 32262-88 |
| Brand | JW Winco |
| Model | 820.4-230-NL-NI |