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SKF 71911 ACDGA/P4A is a 55mm bore super-precision angular contact ball bearing with a 25° contact angle. Designed for high-speed and high-accuracy applications such as machine tool spindles, it features enhanced internal geometry and P4A tolerance class for superior running accuracy.
MODEL 71911 ACDGA/P4A
$645.39 Each
Prices are subject to change
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Returnable:No
Basic Dynamic Load Rating
18.2 kN
Basic Static Load Rating
13.7 kN
Bearing Material
Bearing steel
Bore Diameter
55 mm
Cage
Non-metallic
Coating
Without
Contact Angle
25 °
Contact Type
Normal contact (two-point contact)
Design
High-capacity D
Lubricant
None
Matched Arrangement
No
Matched Condition (axial Clearance/ Preload)
Measuring load, class A
Number of Rows
1
O.D.
80 mm
Pack Height
85 mm
Pack Length
83 mm
Pack Width
25 mm
Ring Type
One-piece inner and outer rings
Sealing
Without
Tolerance Class
P4A
Universal Matching Bearing
Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
Width
13 mm
Super-precision, high-capacity, universally matchable single row angular contact ball bearing
These super-precision, high-capacity, single row angular contact ball bearings accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They are designed to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures. Being universally matchable, they can be used together in arrangements to provide effective load sharing, within a predetermined preload range, without the use of shims or similar devices.
- Very high running accuracy
- Very high load carrying capacity
- Relatively high speed and stiffness
- Universally matchable
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.
#2177657
Brand
FAG Bearing
Model
B71911E.T.P4S.K5.UL
#2177658
Brand
FAG Bearing
Model
B71911E.T.P4S.UL
#831089
Brand
NTN Bearing
Model
71911HVUJ74
#5035445
Brand
NSK Bearings
Model
7911A5TRSULP4Y
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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