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SKF 3309 A-2RS1/MT33 double-row angular contact ball bearing, 45mm bore, 30° contact angle. Contact seals on both sides protect against contamination. Machined brass cage for durability. Pre-lubricated with MT33 grease. Designed for combined radial and axial loads in pumps, gearboxes, and industrial machinery.
MODEL 3309 A-2RS1/MT33
$371.81 Each
Prices are subject to change
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Returnable:No
Arrangement of Contact Angle (double-row Bearing)
Back-to-back (O)
Axial Internal Clearance
CN
Basic Dynamic Load Rating
75 kN
Basic Static Load Rating
53 kN
Bearing Outer Ring Locating Feature
None
Bore Diameter
45 mm
Cage
Sheet metal
Coating
Without
Contact Angle
30 °
Contact Type
Normal contact (two-point contact)
Dimension Type
Metric
I.D.
1 7/9 in
Inner Diameter (mm)
45.000
Limiting Speed
4800 r/min
Lubricant
None
Lubricant (in Bearing)
Grease
Matched Arrangement
No
Material
Bearing steel
Material/Treatment
Bearing steel
Number of Rows
2
O.D. (in)
3 8/9
Outer Diameter (mm)
100.000
Pack Height
106 mm
Pack Length
104 mm
Pack Width
44 mm
Relubrication Feature
Without
Ring Type
One-piece
Sealing
Seal on both sides
Sealing Type
Contact
SKF Performance Class
SKF Explorer
Type
Normal contact (two-point contact)
Universal Matching Bearing
No
Width
39.7 mm
Width (mm)
39.700
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.
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