Thin Section Ball Bearings

**TIMKEN Ball Bearings: Precision Engineered for Demanding Applications**

TIMKEN is a global leader in engineered bearings and mechanical power transmission products, renowned for delivering superior performance, reliability, and durability. Among its extensive portfolio, **TIMKEN Deep Groove Ball Bearings** and **Thin Section Ball Bearings (61800, 61900 series)** stand out as critical components in industrial machinery, automotive systems, and precision equipment. These bearings are designed to handle radial and axial loads with exceptional efficiency, ensuring smooth operation and extended service life even in the most demanding environments.

### **Technical Features & Performance Advantages**

**Deep Groove Ball Bearings**
TIMKEN’s Deep Groove Ball Bearings are engineered for versatility, featuring deep raceway grooves that enable high-speed operation while accommodating both radial and moderate axial loads. Key benefits include:
– **Optimized Load Distribution:** Precision-ground raceways and high-quality steel construction ensure even load distribution, reducing wear and extending bearing life.
– **Low Friction & High Efficiency:** Advanced sealing options (such as shields or rubber seals) minimize friction and contamination, making them ideal for electric motors, pumps, and gearboxes.
– **Robust Construction:** Manufactured from premium chrome steel or corrosion-resistant materials, these bearings withstand harsh operating conditions, including high temperatures and heavy loads.

**Thin Section Ball Bearings (61800, 61900 Series)**
TIMKEN’s Thin Section Ball Bearings are designed for applications where space and weight savings are critical, without compromising performance. These bearings feature:
– **Compact, Lightweight Design:** With ultra-thin cross-sections, they are ideal for robotics, aerospace, medical equipment, and semiconductor machinery.
– **High Precision & Rigidity:** Tight tolerances and superior roundness ensure smooth motion control in precision applications.
– **Multiple Configurations:** Available in open, shielded, or sealed variants, with options for radial, angular contact, or four-point contact designs.

### **Typical Applications**
TIMKEN’s Deep Groove and Thin Section Ball Bearings are widely used across industries, including:
– **Industrial Machinery:** Conveyors, machine tools, and electric motors benefit from their durability and low maintenance.
– **Automotive Systems:** Alternators, transmissions, and wheel hubs rely on their high-speed capabilities and load resistance.
– **Precision Equipment:** Medical devices, robotics, and optical systems utilize thin-section bearings for their compactness and accuracy.

With a legacy of innovation and precision engineering, TIMKEN continues to set the standard for performance in ball bearing technology, ensuring optimal efficiency and reliability for critical applications worldwide. Whether in high-speed industrial equipment or compact precision instruments, TIMKEN bearings deliver unmatched performance and longevity.

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Part Number Clearance Bore Size d Features Outside Diameter D Outside Ring Width B Cr - Dynamic Load Rating C0r - Static Load Rating Grease Limiting Speed Oil Reference Speed
61817-ZZ
C0 (Normal)
85 mm
Shields
110 mm
13 mm
19200 N
19800 N
5600 rpm
6700 rpm
618/560MA
C0 (Normal)
560 mm
Open
680 mm
56 mm
290000 N
523000 N
700 rpm
850 rpm
61804/VSL609
C0 (Normal)
20 mm
Open
32 mm
7 mm
4000 N
2500 N
N/A
CAD
61917
C0 (Normal)
85 mm
Open
120 mm
18 mm
31900 N
29600 N
5300 rpm
6300 rpm
618/600MA
C0 (Normal)
600 mm
Open
730 mm
60 mm
365000 N
690000 N
670 rpm
800 rpm
61917-2RS
C0 (Normal)
85 mm
Contact Seals
120 mm
18 mm
31900 N
29600 N
5300 rpm
6300 rpm
618/670MA
C0 (Normal)
670 mm
Open
820 mm
69 mm
395000 N
780000 N
560 rpm
670 rpm
61917-ZZ
C0 (Normal)
85 mm
Shields
120 mm
18 mm
31900 N
29600 N
5300 rpm
6300 rpm
618/710MA
C0 (Normal)
710 mm
Open
870 mm
74 mm
480000 N
1010000 N
530 rpm
630 rpm
61818
C0 (Normal)
90 mm
Open
115 mm
13 mm
19500 N
20500 N
5300 rpm
6300 rpm
618/750MA
C0 (Normal)
750 mm
Open
920 mm
78 mm
475000 N
1010000 N
500 rpm
600 rpm
61818-2RS
C0 (Normal)
90 mm
Contact Seals
115 mm
13 mm
19500 N
20500 N
5300 rpm
6300 rpm
618/800MA
C0 (Normal)
800 mm
Open
980 mm
82 mm
560000 N
1250000 N
450 rpm
530 rpm
61818-ZZ
C0 (Normal)
90 mm
Shields
115 mm
13 mm
19500 N
20500 N
5300 rpm
6300 rpm
618/850MA
C0 (Normal)
850 mm
Open
1030 mm
82 mm
565000 N
1290000 N
380 rpm
450 rpm
61918
C0 (Normal)
90 mm
Open
125 mm
18 mm
32800 N
31500 N
5000 rpm
6000 rpm
61814-2RS
C0 (Normal)
70 mm
Contact Seals
90 mm
10 mm
12100 N
11900 N
6700 rpm
8000 rpm
61812-ZZ-C3
C3
60 mm
Shields
78 mm
10 mm
11500 N
10600 N
7900 rpm
9400 rpm
61826-2RS-C3
C3
130 mm
Contact Seals
165 mm
18 mm
37900 N
42900 N
3400 rpm
5000 rpm
61816
C0 (Normal)
80 mm
Open
100 mm
10 mm
12700 N
13300 N
6000 rpm
7100 rpm
61812-2RS-C3
C3
60 mm
Contact Seals
78 mm
10 mm
11500 N
10600 N
7900 rpm
9400 rpm
61830-C3
C3
150 mm
Open
190 mm
20 mm
49100 N
57100 N
3000 rpm
4500 rpm
61812-2RZ-C3
C3
60 mm
Non-Contact Seals
78 mm
10 mm
11500 N
10600 N
7900 rpm
9400 rpm
61821-2RS
C0 (Normal)
105 mm
Contact Seals
130 mm
13 mm
28100 N
11900 N
N/A
CAD