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Timken 2MM9319WI SUM super precision angular contact ball bearing, 45mm bore, 15-degree contact angle, duplex medium preload (SUM), ABEC 7 (P4S) precision. Designed for high-speed machine tool spindles and precision grinding applications requiring minimal runout and vibration. Duplex set configuration provides optimal rigidity and speed performance for demanding industrial and manufacturing equipment.
MODEL 2MM9319WI SUM
$1,579.58 Each
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Typically Ships in: 1 day
Returnable: Yes
0.7087 in C0 - Static Radial Rating (per row)
47400 N
0.7087 in World part number
71919C-T-P4S-SUM
10700 lbf C1 ISO - Dynamic Radial Rating (per row)
42500 N
4.020 in Limiting Speed (Grease) (per row)
9800 RPM Limiting speed (oil):19600 RPM Manufacturing part number:2MM9319WI SUM O.D. (in):130 mm 5.1181 Outer ring backing diameter:123.5 mm
4.860 in Precision rating
ISO P4S (ABEC 7/9) Rows per set:Single Total width:18 mm
9540 lbf Cage type
CR - Phenolic Outer Land Riding Cage Contact angle:15 Design units:Metric Inner ring backing diameter:102.0 mm
Ball type
Steel Bearing width:18 mm
Ball Type
STEEL
Bearing Width
18 mm 0.7087 in
Bore
95 mm
C0 - Static Radial Rating (per row)
47400 N 10700 lbf
C1 ISO - Dynamic Radial Rating (per row)
42500 N 9540 lbf
Cage Type
CR - Phenolic Outer Land Riding Cage
Ce - Dynamic Radial Rating (per row)
46800 N 10500 lbf
Contact Angle
15 º
d - Bore
95 mm
D - Outer Diameter
130 mm 5.1181 in
da - Inner Ring Backing Diameter
102.0 mm 4.020 in
Da - Outer Ring Backing Diameter
123.5 mm 4.860 in
Design Units
Metric
DOuter Ring Backing Diameter
123.5 mm 4.860 in
Dynamic Radial Rating (per row)
46800 N 10500 lbf
I.D.
95 mm
Inner Ring 'To Clear' Radius
1 mm 0.039 in
Inner Ring Backing Diameter
102.0 mm 4.020 in
Limiting Speed (Grease) (per row)
9800 rpm
Limiting Speed (Oil)
19600 rpm
Manufacturing Part Number
2MM9319WI SUM
Outer Diameter
130 mm 5.1181 in
Outer Ring 'To Clear' Radius
1 mm 0.039 in
Precision Rating
ISO P4S (ABEC 7/9)
R - Inner Ring "To Clear" Radius
1 mm 0.039 in
r - Outer Ring "To Clear" Radius
1 mm 0.039 in
Rows per Set
Single
Static Radial Rating (per row)
47400 N 10700 lbf
Total Width
18 mm 0.7087 in
World Part Number
71919C-T-P4S-SUM
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.
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more