61800 Series (Extra Thin Section) Deep Groove Ball Bearings
Material: Chrome Steel (Gcr15) / Stainless Steel
Structure: Single Row / Deep Groove / Extra Thin Section
Precision: P0, P6, P5, P4 (ABEC-1 / ABEC-3 / ABEC-5 / ABEC-7)
Sealing: Open / ZZ / 2RS
Cage: Pressed Steel / Polyamide
Clearance: C2, C0, C3
Bore Range: 10mm – 80mm
Application: Precision instruments, aerospace components, high-speed spindles, medical equipment
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The 61800 Series extra-thin-section deep groove ball bearings extend the slim-line design into larger bore diameters, enabling weight-optimized and space-efficient bearing arrangements across a broad size range. High-precision grades (up to ABEC-7) support demanding accuracy requirements. Critical for precision instruments, aerospace components, high-speed grinding spindles, and medical imaging equipment.
Technical Specifications
| Bearing No. | Bore (d) mm | Outer Dia. (D) mm | Width (B) mm | Dyn. Load Cr (kN) | Stat. Load Cor (kN) | Ref. Speed (rpm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 61800 | 10 | 19 | 5 | 2.70 | 1.40 | 60000 | 0.005 |
| 61801 | 12 | 21 | 5 | 2.90 | 1.50 | 56000 | 0.005 |
| 61802 | 15 | 24 | 5 | 3.00 | 1.60 | 50000 | 0.007 |
| 61803 | 17 | 26 | 5 | 3.15 | 1.75 | 45000 | 0.008 |
| 61804 | 20 | 32 | 7 | 4.30 | 2.50 | 38000 | 0.019 |
| 61805 | 25 | 37 | 7 | 4.90 | 3.00 | 34000 | 0.022 |
| 61806 | 30 | 42 | 7 | 5.40 | 3.40 | 30000 | 0.025 |
| 61807 | 35 | 47 | 7 | 5.80 | 3.80 | 28000 | 0.028 |
| 61808 | 40 | 52 | 7 | 6.40 | 4.30 | 26000 | 0.032 |
