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Timken 2MMC9306WI QUH is a super precision angular contact ball bearing configured as a quadruplex set with heavy preload (QUH). It features a 30mm bore and ABEC 7 (P4S) precision class for extreme rigidity and accuracy in high-demand machine tool spindles and precision grinding applications. The quadruplex arrangement provides maximum load capacity and stiffness for heavy cutting and boring operations.
MODEL 2MMC9306WI QUH
$1,437.02 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable: Yes
0.3543 in C0 - Static Radial Rating (per row)
5890 N
1.330 in Limiting Speed (Grease) (per row)
35640 rpm Limiting speed (oil):71280 rpm Manufacturing part number:2MMC9306WI QUH O.D. (in):47 mm 1.8504 Outer ring backing diameter:43.7 mm
1.4172 in World part number
C71906C-T-P4S-QUH
1.720 in Rows per set
Quadruplex Total width:36 mm
1320 lbf C1 ISO - Dynamic Radial Rating (per row)
8670 N
1960 lbf Cage type
CR - Phenolic Outer Land Riding Cage Contact angle:15 Design units:Metric Inner ring backing diameter:33.9 mm
Ball type
Ceramic Bearing width:9 mm
Ball Type
Ceramic
Bearing Width
9 mm 0.3543 in
Bore
30 mm
C1 ISO - Dynamic Radial Rating (per row)
8670 N 1960 lbf
Cage Type
CPhenolic Outer Land Riding Cage
Contact Angle
15 º
Design Units
Metric
DOuter Ring Backing Diameter
43.7 mm 1.720 in
Dynamic Radial Rating (per row)
9540 N 2150 lbf
I.D.
30 mm
Inner Ring 'To Clear' Radius
0.30 mm 0.012 in
Inner Ring Backing Diameter
33.9 mm 1.330 in
Limiting Speed (Grease) (per row)
35640 rpm
Limiting Speed (Oil)
71280 rpm
Manufacturing Part Number
2MMC9306WI QUH
Outer Diameter
47 mm 1.8504 in
Outer Ring 'To Clear' Radius
0.3 mm 0.012 in
Rows per Set
Quadruplex
Static Radial Rating (per row)
5890 N 1320 lbf
Total Width
36 mm 1.4172 in
World Part Number
C71906C-T-P4S-QUH
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