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Timken 3MM9100WI TUL is a super precision angular contact ball bearing configured as a triplex set with light preload (TUL). This P4S-class bearing meets ABEC 7/9 precision standards for high-speed, high-rigidity applications such as machine tool spindles, precision grinders, and jig borers. The triplex arrangement provides exceptional axial load capacity and rotational accuracy.
MODEL 3MM9100WI TUL
Returnable: Yes
Ball Type
STEEL
Bearing Width
8 mm 0.3150 in
Bore
10 mm
C0 - Static Radial Rating (per row)
2140 N 480 lbf
C1 ISO - Dynamic Radial Rating (per row)
4780 N 1070 lbf
Cage Type
CR - Phenolic Outer Land Riding Cage
Ce - Dynamic Radial Rating (per row)
5300 N 1190 lbf
Contact Angle
25 º
d - Bore
10 mm
D - Outer Diameter
26 mm 1.0236 in
da - Inner Ring Backing Diameter
13.3 mm 0.530 in
Da - Outer Ring Backing Diameter
23.2 mm 0.920 in
Design Units
Metric
DOuter Ring Backing Diameter
23.2 mm 0.920 in
Dynamic Radial Rating (per row)
5300 N 1190 lbf
Inner Ring 'To Clear' Radius
0.30 mm 0.012 in
Inner Ring Backing Diameter
13.3 mm 0.530 in
Limiting Speed (Grease) (per row)
61700 rpm
Limiting Speed (Oil)
123400 rpm
Manufacturing Part Number
3MM9100WI TUL
Outer Diameter
26 mm 1.0236 in
Outer Ring 'To Clear' Radius
0.3 mm 0.012 in
R - Inner Ring "To Clear" Radius
0.30 mm 0.012 in
r - Outer Ring "To Clear" Radius
0.3 mm 0.012 in
Rows per Set
Triplex
Static Radial Rating (per row)
2140 N 480 lbf
Total Width
24 mm 0.945 in
World Part Number
7000E-T-P4S-TUL
EXTRA-LIGHT ISO 10 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.
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more