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Timken 3MM9307WI SUH is a super precision angular contact ball bearing configured as a triplex set with heavy preload (SUH). This ABEC 7 (P4S) precision class bearing is engineered for high rigidity and accuracy in demanding machine tool spindles, precision grinders, and high-speed applications. The triplex arrangement provides maximum axial and radial load capacity with controlled preload for optimal stiffness and rotational accuracy.
MODEL 3MM9307WI SUH
$363.22 Each
Prices are subject to change
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Returnable: Yes
0.3937 in C0 - Static Radial Rating (per row)
8530 N
0.3937 in World part number
71907E-T-P4S-SUH
1.550 in Limiting Speed (Grease) (per row)
22900 rpm Limiting speed (oil):45800 rpm Manufacturing part number:3MM9307WI SUH O.D. (in):55 mm 2.1654 Outer ring backing diameter:51.1 mm
1920 lbf C1 ISO - Dynamic Radial Rating (per row)
10800 N
2.010 in Precision rating
ISO P4S (ABEC 7/9) Rows per set:Single Total width:10 mm
2440 lbf Cage type
CR - Phenolic Outer Land Riding Cage Contact angle:25 Design units:Metric Inner ring backing diameter:39.5 mm
Ball type
Steel Bearing width:10 mm
Ball Type
STEEL
Bearing Width
10 mm 0.3937 in
Bore
35 mm
C1 ISO - Dynamic Radial Rating (per row)
10800 N 2440 lbf
Cage Type
CPhenolic Outer Land Riding Cage
Contact Angle
25 º
Design Units
Metric
DOuter Ring Backing Diameter
51.1 mm 2.010 in
Dynamic Radial Rating (per row)
11600 N 2680 lbf
I.D.
35 mm
Inner Ring 'To Clear' Radius
0.6 mm 0.024 in
Inner Ring Backing Diameter
39.5 mm 1.550 in
Limiting Speed (Grease) (per row)
22900 rpm
Limiting Speed (Oil)
45800 rpm
Manufacturing Part Number
3MM9307WI SUH
Outer Diameter
55 mm 2.1654 in
Outer Ring 'To Clear' Radius
0.6 mm 0.024 in
Precision Rating
ISO P4S (ABEC 7/9)
Rows per Set
Single
Static Radial Rating (per row)
8530 N 1920 lbf
Total Width
10 mm 0.3937 in
World Part Number
71907E-T-P4S-SUH
SPINDLE BEARINGS ULTRA-LIGHT ISO 19 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 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.
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SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more