Fafnir® Spindle Deep Groove Ball Bearings (9100K, 200K, 300K)

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

When precision, reliability, and durability are critical, engineers and manufacturers turn to **TIMKEN® Ball Bearings**, including the high-performance **Fafnir® Spindle and Deep Groove Ball Bearings (9100K, 200K, 300K series)**. Designed for industrial machinery, automotive systems, and precision equipment, these bearings deliver exceptional rotational accuracy, reduced friction, and extended service life—even in high-speed and high-load applications.

### **Technical Features & Engineering Excellence**
TIMKEN’s **Fafnir® Precision Ball Bearings** are engineered with exacting tolerances and premium materials to meet the rigorous demands of modern industrial applications. Key features include:

– **Ultra-Precise Manufacturing:** The **9100K, 200K, and 300K series** are manufactured to ABEC-7 or higher precision standards, ensuring minimal runout and vibration for smooth operation in high-speed spindles and precision instruments.
– **Optimized Raceway & Ball Geometry:** Advanced grinding techniques and superior surface finishes reduce friction and heat generation, enhancing efficiency and reducing wear.
– **High-Grade Steel Construction:** Made from vacuum-degassed bearing steel for superior hardness, fatigue resistance, and long-term durability.
– **Specialized Lubrication Options:** Available with high-performance greases or oil lubrication systems to suit high-RPM or extreme-temperature environments.
– **Robust Sealing & Shielding:** Configurable with contact or non-contact seals to protect against contaminants while maintaining low torque resistance.

### **Performance Advantages**
TIMKEN’s precision ball bearings outperform conventional bearings in critical areas:

– **Higher Speed Capability:** Precision-balanced design minimizes centrifugal forces, allowing stable operation at elevated RPMs in machine tool spindles and turbochargers.
– **Extended Bearing Life:** Reduced internal stress and optimized load distribution enhance fatigue resistance, lowering maintenance costs.
– **Superior Rigidity & Accuracy:** Essential for CNC machining, robotics, and medical equipment where micron-level precision is required.
– **Reduced Energy Consumption:** Low-friction designs improve efficiency, contributing to energy savings in motors and industrial drives.

### **Typical Applications**
TIMKEN’s **Fafnir® Precision Ball Bearings** are trusted in industries where failure is not an option:

– **Machine Tools & Spindles:** High-speed milling, grinding, and lathe applications requiring minimal vibration.
– **Automotive Systems:** Turbochargers, electric vehicle motors, and transmission components.
– **Aerospace & Defense:** Gyroscopes, actuators, and avionics systems.
– **Medical & Laboratory Equipment:** MRI scanners, dental drills, and precision robotics.
– **Industrial Pumps & Compressors:** Reliable performance in harsh, high-load environments.

For engineers seeking unmatched precision and durability, **TIMKEN’s Fafnir® 9100K, 200K, and 300K series** ball bearings represent the pinnacle of bearing technology—delivering consistent performance where it matters most.

*Trusted by industry leaders worldwide, TIMKEN continues to innovate, ensuring your machinery operates at peak efficiency with minimal downtime.*

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Part Number Rows per Set d - Bore D - Outer Diameter Bearing Width Ce - Dynamic Radial Rating (per row) C0 - Static Radial Rating (per row) Limiting Speed (Grease) (per row) Limiting Speed (Oil) Ball Type
MM9116K
Single
80 mm
125 mm
22 mm
52800 N
40000 N
9420 rpm
18840 rpm
STEEL
MMC9116K
Single
80 mm
125 mm
22 mm
52800 N
35300 N
11300 rpm
22600 rpm
Ceramic
MM216K
Single
80 mm
140 mm
26 mm
80600 N
53400 N
9200 rpm
18400 rpm
STEEL
MMC216K
Single
80 mm
140 mm
26 mm
80600 N
47200 N
11000 rpm
22000 rpm
Ceramic
MM9117K
Single
85 mm
130 mm
22 mm
54900 N
42900 N
8900 rpm
17800 rpm
STEEL
MMC9117K
Single
85 mm
130 mm
22 mm
54900 N
38300 N
10700 rpm
21400 rpm
Ceramic
MM9118K
Single
90 mm
140 mm
24 mm
64500 N
49800 N
8390 rpm
16780 rpm
STEEL
MMC9118K
Single
90 mm
140 mm
24 mm
64500 N
44100 N
10100 rpm
20200 rpm
Ceramic
MM9120K
Single
100 mm
150 mm
24 mm
66700 N
54300 N
7630 rpm
15260 rpm
STEEL
MMC9120K
Single
100 mm
150 mm
24 mm
66700 N
48200 N
9160 rpm
18320 rpm
Ceramic
MM9122K
Single
110 mm
170 mm
28 mm
83400 N
66700 N
6840 rpm
13680 rpm
STEEL
MMC314K
Single
70 mm
150 mm
35 mm
115500 N
60600 N
11880 rpm
23760 rpm
Ceramic
MMC9122K
Single
110 mm
170 mm
28 mm
83400 N
59900 N
8210 rpm
16420 rpm
Ceramic
MM9115K
Single
75 mm
115 mm
20 mm
43800 N
33400 N
10100 rpm
20200 rpm
STEEL
MM9124K
Single
120 mm
180 mm
28 mm
86300 N
72500 N
6320 rpm
12640 rpm
STEEL
MMC9115K
Single
75 mm
115 mm
20 mm
43800 N
29800 N
12100 rpm
24200 rpm
Ceramic
MMC9124K
Single
120 mm
180 mm
28 mm
86300 N
65000 N
7580 rpm
15160 rpm
Ceramic
MM215K
Single
75 mm
130 mm
25 mm
68900 N
44500 N
9900 rpm
19800 rpm
STEEL
MM9126K
Single
130 mm
200 mm
33 mm
112600 N
94300 N
5810 rpm
11620 rpm
STEEL
MMC215K
Single
75 mm
130 mm
25 mm
68900 N
39900 N
11900 rpm
23800 rpm
Ceramic