6909 open / 61909 open oiled deep groove ball bearings
The 6909 open / 61909 open is an extra-thin single-row deep groove ball bearing measuring 45 x 68 x 12 mm, designed for applications where space and weight are critical. Its ultra-narrow cross-section and low mass allow high rotational speeds with very low torque, with a 14.0 kN dynamic load rating in a compact package.
Product Overview
The 6909 open / 61909 open is an extra-thin single-row deep groove ball bearing with a 45 mm bore, 68 mm outside diameter and a 12 mm width. Its exceptionally narrow cross-section saves valuable axial space, while the low mass of the bearing keeps inertia and friction torque to a minimum — both factors contribute to excellent running behaviour at high speeds.
On this configuration it is supplied open, which allows the highest possible speeds and easy relubrication for applications that control their own lubrication. The deep raceway grooves accommodate radial loads and axial loads in both directions, delivering quiet, smooth running for precision equipment.
Key Features
- Extra-thin series: extremely narrow cross-section for space-critical designs
- Open design for maximum speed capability and easy relubrication
- Engineered for motor and pump duty with stable low-noise running
- Very low weight keeps inertia and friction torque to a minimum
- High speed capability with low noise and low vibration
- Dimensional accuracy to ISO 15 / DIN 625 standard tolerances
Typical Applications
Typical applications include mid-size electric motors, pump drives, small gearboxes and automated assembly machinery, where a thin-section bearing must combine high speed with dependable load capacity in a compact envelope.
Technical Data
| Inside Ø (mm): | 45 |
| Outside Ø (mm): | 68 |
| Width (mm): | 12 |
| Tolerance for inside-Ø (mm): | 0/-0.012 |
| Tolerance for outside-Ø (mm): | 0/-0.013 |
| Tolerance for width (mm): | 0/-0.12 |
| Rows Of Balls: | single row |
| Seal: | open |
| Ring Material: | Rolling bearing steel |
| Internal Clearance: | CN (Standard) |
| Cage Material: | Sheet Steel |
| Flange: | no |
| Slot & Snap Ring: | no |
| Rolling Element Material: | Rolling bearing steel |
| Full Complement Ball Set: | no |
| Basic Dynamic Load Rating (Cr): | 14.0 kN |
| Basic Static Load Rating (C0r): | 9.8 kN |
| Limiting Speed (Grease): | 13000 r/min |
| Reference Speed: | 20000 r/min |
Quality Assurance & Customisation
Every bearing in this series is produced under strict process control and undergoes 100% dimensional and noise inspection before dispatch. For pump and motor OEMs we offer matched tolerance grading, custom grease fills and branded packaging — share your application data and our engineers will confirm the right clearance and sealing option.
Ordering & Quotation
Request a quotation for the 6909 open / 61909 open today. We supply samples as well as production volumes, with consistent quality, competitive pricing and dependable lead times.
Pro: 6909 2RS C3/ 61909 2RS C3 deep groove ball bearings | Next: 6909 open C3 / 61909 open C3 oiled deep groove ball bearings
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ZZ Bearing (Shanghai) Co., Ltd.
Add.: NO.18 Dongwu road, Songjiang Industrial Zone, Shanghai, China
Contact:Helen
Phone:+86-13062870081
Tel: +86-21-51061761
E-mail: sales@bearings-factory.com
