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The SKF 6309-2ZNR is a 45mm bore deep groove ball bearing with steel shields on both sides and a snap ring groove for axial location. It features a pressed steel cage and normal internal clearance. Suitable for electric motors, pumps, and general industrial applications.
MODEL 6309-2ZNR
$117.46 Each
Prices are subject to change
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Returnable: See conditions
Basic Dynamic Load Rating
55.3 kN
Basic Static Load Rating
31.5 kN
Bearing Material
Bearing steel
Bearing Outer Ring Locating Feature
Snap ring (fitted)
Bore Diameter
45 mm
Bore Type
Cylindrical
Cage
Steel
Clearance
Normal
Coating
Without
Filling Slots
Without
I.D.
1.772 in
Limiting Speed
7500 r/min
Lubricant
Grease
Matched Arrangement
No
Number of Rows
1
O.D. (in)
3.937
Pack Height
116 mm
Pack Length
114 mm
Pack Width
31 mm
Radial Internal Clearance
CN
Reference Speed
15000 r/min
Relubrication Feature
Without
Sealing
Shield on both sides
Sealing Type
Non-contact
SKF Performance Class
SKF Explorer
Tolerance Class
Class P6 (P6)
Width
25 mm
Deep groove ball bearing with snap ring and integral sealing
Single row deep groove ball bearing, with snap ring groove and seals or shields on one or both sides, are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than other bearing types. The snap ring, fitted in an annular groove in the outer ring, facilitates axial location of the bearings within their housings. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.
- Snap ring facilitates axial location within housing
- Integral sealing prolongs bearing service life
- Typical benefits of single row deep groove ball bearings
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.
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Disclaimer: The return policy information shown below is merely an excerpt from SKF's General Conditions of Sale.
RETURN OF GOODS FOR CREDIT
Goods will not be accepted for return without prior written approval from SKF. The return freight must be prepaid by the Buyer. Unless return of Goods is due to Supplier error, Goods returned will be subject to a credit service fee of $25.00 or 15% of the credit value, whichever is greater. An additional service fee may apply is further inspection is required at the discretion of SKF