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7x14x3.5mm 687 W3.5 open oiled Miniature Deep Groove Ball Bearing
The 687 is a miniature thin-section single-row deep groove ball bearing measuring 7 x 14 x 3.5 mm, designed for instruments and compact mechanisms where space and weight are at a premium. The ultra-narrow cross-section keeps the assembly light and allows very high rotational speeds with minimal torque, rated at 1.37 kN dynamic load.
Product Overview
The 687 is a miniature thin-section single-row deep groove ball bearing measuring 7 x 14 x 3.5 mm, designed for instruments and compact mechanisms where space and weight are at a premium. The ultra-narrow cross-section keeps the assembly light and allows very high rotational speeds with minimal torque, rated at 1.37 kN dynamic load.
Supplied open, the 687 allows the highest possible speeds and is easy to relubricate, which suits oil-mist and circulating-oil lubrication in high-speed machinery.
Key Features
- Miniature thin-section design for space- and weight-critical mechanisms
- Deep uninterrupted raceway grooves handle radial and axial loads in both directions
- Ultra-low mass and friction enable very high speed operation
- Open design allows the highest possible speeds and flexible relubrication in oil-lubricated systems
- Precision-ground rings and graded micro-balls for low noise and smooth running
- ISO 15 / DIN 625 dimension series with CN radial internal clearance (standard)
Typical Applications
Typical applications include small electric motors and encoders, medical and dental instruments, laboratory and measuring equipment, flow meters, small pumps, office automation equipment, and robotics or servo mechanisms requiring low torque and high speed.
Technical Data
| Inside Ø (mm): | 7 |
| Outside Ø (mm): | 14 |
| Width (mm): | 3.5 |
| Tolerance for inside-Ø (mm): | 0/-0,008 |
| Tolerance for outside-Ø (mm): | 0/-0,008 |
| Tolerance for width (mm): | 0/-0,12 |
| Rows Of Balls: | single row |
| Seal: | open |
| Internal Clearance: | CN (Standard) |
| Flange: | no |
| Slot & Snap Ring: | no |
| Ring Material: | Rolling bearing steel |
| Rolling Element Material: | Rolling bearing steel |
| Cage Material: | Sheet Steel |
| Full Complement Ball Set: | no |
| Basic Dynamic Load Rating (Cr): | 1.37 kN |
| Basic Static Load Rating (C0r): | 0.6 kN |
| Reference Speed: | 17000 r/min |
| Limiting Speed (Grease): | 28000 r/min |
Quality Assurance & Customisation
All 687 bearings are manufactured from high-chromium rolling bearing steel with controlled heat treatment, precision-ground raceways and graded balls. Every batch is inspected for dimensional accuracy, radial clearance and noise level before dispatch, and our engineers can supply custom clearances, preloads or special packaging for OEM programmes.
Ordering & Quotation
Request a quotation for the 687 today. We supply samples as well as production volumes with factory-direct pricing, and our engineering team is available to confirm interchangeability and application fit before you order.
Pro: 7x14x5 mm 687 2RS Miniature Deep Groove Ball Bearing | Next: 7x14x5mm 687 ZZ / 2Z Miniature Deep Groove Ball Bearing
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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
