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Timken 2MM220WI DUH is a super precision angular contact ball bearing configured as a duplex set with heavy preload (DUH). This P4S/ABEC 7 precision class bearing is designed for high-rigidity machine tool spindles, boring heads, and applications requiring maximum axial and radial stiffness. The matched duplex pair is supplied with a factory-set preload for simplified installation and consistent performance in precision grinding and milling operations.
MODEL 2MM220WI DUH
Returnable: Yes
1.3386 in C0 - Static Radial Rating (per row)
126800 N
2.6772 in World part number
7220C-T-P4S-DUH
28500 lbf C1 ISO - Dynamic Radial Rating (per row)
150000 N
33700 lbf Cage type
CR - Phenolic Outer Land Riding Cage Contact angle:15 Design units:Metric Inner ring backing diameter:114.4 mm
4.510 in Limiting Speed (Grease) (per row)
8000 RPM Limiting speed (oil):16000 rpm Manufacturing part number:2MM220WI DUH O.D. (in):180 mm 7.0866 Outer ring backing diameter:166 mm
6.540 in Precision rating
ISO P4S (ABEC 7/9) Rows per set:Duplex Total width:68 mm
Ball type
Steel Bearing width:34 mm
Ball Type
STEEL
Bearing Width
34 mm 1.3386 in
Bore
100 mm
C1 ISO - Dynamic Radial Rating (per row)
150000 N 33700 lbf
Cage Type
CPhenolic Outer Land Riding Cage
Contact Angle
15 º
Design Units
Metric
DOuter Ring Backing Diameter
166 mm 6.540 in
Dynamic Radial Rating (per row)
165200 N 37100 lbf
I.D.
100 mm
Inner Ring 'To Clear' Radius
2.1 mm 0.079 in
Inner Ring Backing Diameter
114.4 mm 4.510 in
Limiting Speed (Grease) (per row)
8000 rpm
Limiting Speed (Oil)
16000 rpm
Manufacturing Part Number
2MM220WI DUH
Outer Diameter
180 mm 7.0866 in
Outer Ring 'To Clear' Radius
2.1 mm 0.079 in
Precision Rating
ISO P4S (ABEC 7/9)
Rows per Set
Duplex
Static Radial Rating (per row)
126800 N 28500 lbf
Total Width
68 mm 2.6772 in
World Part Number
7220C-T-P4S-DUH
LIGHT ISO 02 SERIES
HIGH PRECISION MV
Running accuracy, performance and dimensional controls conform to ABEC 7 (ISO P4) requirements.
SUPER PRECISION MM
Running accuracy and performance meet ABEC 9 (ISO P2) levels. Other features conform to ABEC 7 (ISO P4) requirements.
WI CONSTRUCTION
- Incorporates low shoulder on non-thrust side of both inner and outer rings.
- Balls separated by one-piece cage piloted against a ground thrust shoulder land of the outer ring.
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 | MROSupply Fasteners |
| Model | FSTPCK-830856 |
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more