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Timken 2MMC9305WI SUL is a super precision angular contact ball bearing designed for high-speed machine tool spindles. This duplex set (DUL) is configured for light preload, offering high rigidity and running accuracy with ABEC 7 (P4S) precision. The 25mm bore bearing is suitable for applications requiring minimal runout and high rotational speeds, such as precision grinders, jig borers, and CNC machining centers.
MODEL 2MMC9305WI SUL
$450.97 Each
Prices are subject to change
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Returnable: Yes
0.3543 in C0 - Static Radial Rating (per row)
5120 N
0.3543 in World part number
C71905C-T-P4S-SUL
1.140 in Limiting Speed (Grease) (per row)
41760 rpm Limiting speed (oil):83520 rpm Manufacturing part number:2MMC9305WI SUL O.D. (in):42 mm 1.6535 Outer ring backing diameter:38.7 mm
1.520 in Rows per set
Single Total width:9 mm
1150 lbf C1 ISO - Dynamic Radial Rating (per row)
8220 N
1840 lbf Cage type
CR - Phenolic Outer Land Riding Cage Contact angle:15 Design units:Metric Inner ring backing diameter:28.9 mm
Ball type
Ceramic Bearing width:9 mm
Ball Type
Ceramic
Bearing Width
9 mm 0.3543 in
Bore
25 mm
C1 ISO - Dynamic Radial Rating (per row)
8220 N 1840 lbf
Cage Type
CPhenolic Outer Land Riding Cage
Contact Angle
15 º
Design Units
Metric
DOuter Ring Backing Diameter
38.7 mm 1.520 in
Dynamic Radial Rating (per row)
9040 N 2030 lbf
I.D.
25 mm
Inner Ring 'To Clear' Radius
0.30 mm 0.012 in
Inner Ring Backing Diameter
28.9 mm 1.140 in
Limiting Speed (Grease) (per row)
41760 rpm
Limiting Speed (Oil)
83520 rpm
Manufacturing Part Number
2MMC9305WI SUL
Outer Diameter
42 mm 1.6535 in
Outer Ring 'To Clear' Radius
0.3 mm 0.012 in
Rows per Set
Single
Static Radial Rating (per row)
5120 N 1150 lbf
Total Width
9 mm 0.3543 in
World Part Number
C71905C-T-P4S-SUL
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