We never sell your data to third parties
Image for Illustration purposes only. Actual product may vary
Timken 7311WN MBR SU is a single row angular contact ball bearing with a 55mm bore. This precision bearing is designed for applications requiring high axial load capacity and rigidity, such as machine tool spindles, pumps, and gearboxes. It features a machined brass cage (MBR) for enhanced performance under high-speed and high-temperature conditions.
MODEL 7311WN MBR SU
$260.60 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
Select Quantity
Typically Ships in: 1 day
Returnable: Yes
1.1417 in Cage type
Machined Bronze Cage Contact angle:40 Design units:Metric Inner ring backing diameter:79.170 mm
3.117 in Manufacturing part number
7311WNMBRSUC1 O.D. (in):120 mm 4.7244 Outer ring backing diameter:97.180 mm
3.826 in Static radial rating
56400 N
Ball type
Steel Bearing width:29 mm
Ball Type
STEEL
Bearing Width
29 mm 1.1417 in
Bore
55 mm
C0 - Static Radial Rating
56400 N 12700 lbf
Cage Type
Machined Bronze Cage
Ce - Dynamic Radial Rating
88800 N 20000 lbf
Contact Angle
40 º
d - Bore
55 mm
D - Outer Diameter
120.000 mm 4.7244 in
da - Inner Ring Backing Diameter
79.170 mm 3.117 in
Da - Outer Ring Backing Diameter
97.180 mm 3.826 in
Design Units
Metric
DOuter Ring Backing Diameter
97.180 mm 3.826 in
Dynamic Radial Rating
88800 N 20000 lbf
I.D.
55 mm
Inner Ring 'To Clear' Radius
2 mm 0.079 in
Inner Ring Backing Diameter
79.170 mm 3.117 in
Manufacturing Part Number
7311WNMBRSUC1
Outer Diameter
120.000 mm 4.7244 in
Outer Ring 'To Clear' Radius
2 mm 0.079 in
R - Inner Ring "To Clear" Radius
2 mm 0.079 in
r - Outer Ring "To Clear" Radius
2 mm 0.079 in
Static Radial Rating
56400 N 12700 lbf
Timken angular contact ball bearings are designed for combination radial and axial loading. Single-row bearings have high thrust capacity in one direction. Some single-row bearings are specifically designed for duplex mounting in sets for maximum performance.
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read moreHow 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.
| Brand | Siemens Controls |
| Model | 3RV2021-1HA10 |
| Brand | SMC |
| Model | CDM2B32-500AZ |
| Brand | Rocky Mountain Twist |
| Model | 95006014 |
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more