Fafnir® Spindle Angular Contact Ball Bearings (9300WI, 9100WI, 200WI, 300WI)

**TIMKEN® Precision Ball Bearings: Superior Performance for Demanding Applications**

When precision, reliability, and high-speed performance are critical, TIMKEN® Ball Bearings—including the renowned *Fafnir® Spindle Angular Contact Ball Bearings* (9300WI, 9100WI, 200WI, 300WI series)—deliver unmatched durability and efficiency. Engineered for exacting industrial, automotive, and precision equipment applications, these bearings combine advanced materials, precision manufacturing, and innovative design to optimize load capacity, rotational accuracy, and service life.

### **Technical Features & Design Advantages**
TIMKEN’s *Fafnir® Spindle Angular Contact Ball Bearings* are designed for high-speed, high-precision applications where rigidity and low friction are essential. Key features include:

– **Superior Steel Construction**: Manufactured from premium-grade steel, these bearings offer exceptional hardness, wear resistance, and fatigue life, even under heavy loads and high RPMs.
– **Angular Contact Design**: The optimized contact angle (typically 15° or 25°) ensures precise axial and radial load distribution, reducing deflection and improving stiffness in spindle applications.
– **Precision Ground Raceways**: Ultra-smooth surfaces minimize vibration and noise, critical for machining accuracy in CNC equipment and high-speed tools.
– **Advanced Lubrication Options**: Available with grease or oil lubrication, these bearings maintain performance in extreme temperatures and high-speed conditions.
– **Sealed & Shielded Variants**: Select models feature integrated seals or shields to prevent contamination in harsh environments.

### **Performance Benefits**
TIMKEN’s precision ball bearings excel in applications demanding tight tolerances and minimal runout:

– **High-Speed Capability**: Optimized internal geometry reduces heat generation, enabling stable operation at elevated speeds.
– **Extended Service Life**: Advanced heat treatment and material purity enhance durability, reducing downtime and maintenance costs.
– **Rigidity & Accuracy**: Ideal for machine tool spindles, robotics, and precision gearboxes where alignment and repeatability are critical.

### **Typical Applications**
These bearings are trusted in industries requiring precision motion control:

– **Industrial Machinery**: CNC lathes, grinding machines, and milling spindles rely on their low vibration and high rigidity.
– **Automotive Systems**: Used in turbochargers, electric motors, and transmission systems where high RPMs and load capacity are vital.
– **Aerospace & Medical Equipment**: Critical for high-precision actuators, rotary tables, and imaging devices.

For engineers and OEMs seeking uncompromising performance, TIMKEN’s *Fafnir® Spindle Bearings* represent a proven solution—combining decades of metallurgical expertise with cutting-edge bearing technology to maximize efficiency and reliability in the most demanding environments.

*Choose TIMKEN for precision that drives innovation.*

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Part Number Rows per Set d - Bore D - Outer Diameter Bearing Width Total Width Contact Angle C0 - Static Radial Rating (per row) Ce - Dynamic Radial Rating (per row) Ball Type
2MMC319WICRSUH
Single
95 mm
200 mm
45 mm
45 mm
15 º
138800 N
204400 N
Ceramic
3MM319WICRSUH
Single
95 mm
200 mm
45 mm
45 mm
25 º
150400 N
196800 N
STEEL
3MMC319WICRSUH
Single
95 mm
200 mm
45 mm
45 mm
25 º
133900 N
196800 N
Ceramic
2MM319WICRDUH
Duplex
95 mm
200 mm
45 mm
90 mm
15 º
155900 N
204400 N
STEEL
2MMC319WICRDUH
Duplex
95 mm
200 mm
45 mm
90 mm
15 º
138800 N
204400 N
Ceramic
3MM319WICRDUH
Duplex
95 mm
200 mm
45 mm
90 mm
25 º
150400 N
196800 N
STEEL
3MMC319WICRDUH
Duplex
95 mm
200 mm
45 mm
90 mm
25 º
133900 N
196800 N
Ceramic
2MM319WICRTUH
Triplex
95 mm
200 mm
45 mm
135 mm
15 º
155900 N
204400 N
STEEL
2MMC319WICRTUH
Triplex
95 mm
200 mm
45 mm
135 mm
15 º
138800 N
204400 N
Ceramic
3MM319WICRTUH
Triplex
95 mm
200 mm
45 mm
135 mm
25 º
150400 N
196800 N
STEEL
3MMC319WICRTUH
Triplex
95 mm
200 mm
45 mm
135 mm
25 º
133900 N
196800 N
Ceramic
2MM319WICRQUH
Quadruplex
95 mm
200 mm
45 mm
180 mm
15 º
155900 N
204400 N
STEEL
2MMC319WICRQUH
Quadruplex
95 mm
200 mm
45 mm
180 mm
15 º
138800 N
204400 N
Ceramic
3MM319WICRQUH
Quadruplex
95 mm
200 mm
45 mm
180 mm
25 º
150400 N
196800 N
STEEL
3MMC319WICRQUH
Quadruplex
95 mm
200 mm
45 mm
180 mm
25 º
133900 N
196800 N
Ceramic
2MM319WICRSUM
Single
95 mm
200 mm
45 mm
45 mm
15 º
155900 N
204400 N
STEEL
2MMC319WICRSUM
Single
95 mm
200 mm
45 mm
45 mm
15 º
138800 N
204400 N
Ceramic
3MM319WICRSUM
Single
95 mm
200 mm
45 mm
45 mm
25 º
150400 N
196800 N
STEEL
3MMC319WICRSUM
Single
95 mm
200 mm
45 mm
45 mm
25 º
133900 N
196800 N
Ceramic
2MM319WICRDUM
Duplex
95 mm
200 mm
45 mm
90 mm
15 º
155900 N
204400 N
STEEL
2MMC319WICRDUM
Duplex
95 mm
200 mm
45 mm
90 mm
15 º
138800 N
204400 N
Ceramic
2MM219WICRTUM
Triplex
95 mm
170 mm
32 mm
96 mm
15 º
112000 N
147100 N
STEEL
2MMC219WICRTUM
Triplex
95 mm
170 mm
32 mm
96 mm
15 º
99600 N
147100 N
Ceramic
3MMC219WICRTUM
Triplex
95 mm
170 mm
32 mm
96 mm
25 º
94900 N
140100 N
Ceramic