Miniature & Extra Small Ball Bearings
689 Miniature & Extra Small Ball Bearing
9 × 17 × 4 mm
689 is a miniature & extra small ball bearing from the MX-3 series with a 9 mm bore, a 17 mm outside diameter and a 4 mm width. It has a dynamic load rating of 1,557 N and a static load rating of 729 N and a speed rating of 36,900 rpm (oil lubrication), weighing about 5.8 g. The radial cross-section (D − d) is 8 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
689 Specifications
| Bearing No. | 689 |
|---|---|
| d (Bore) | 9 mm |
| D (Outer Dia.) | 17 mm |
| B (Width) | 4 mm |
| Dynamic Load | 1,557 N |
| Static Load | 729 N |
| Max. RPM | 36,900 |
| Weight | 5.8 g |
| Series | Open Type Miniature & Extra Small Ball Bearings (6mm–9mm bore) |
689 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the MX-3 series page.
689-ZZ
metal shields on both sides
689-2RS
rubber seals on both sides
Neighbouring Sizes in the MX-3 Series
689 — Frequently Asked Questions
What are the dimensions of the 689 bearing?
The 689 has a bore (d) of 9 mm, an outside diameter (D) of 17 mm and a width of 4 mm, so it is written 9 × 17 × 4 mm.
What is the load rating of the 689?
Dynamic load rating 1,557 N and static load rating 729 N. The speed rating is 36,900 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 689 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 689-ZZ (metal shields on both sides), 689-2RS (rubber seals on both sides). Tell us the exact designation you need in a quote request.
Which other bearings have the same 9 mm bore as the 689?
Other miniature & extra small ball bearings with a 9 mm bore include F689 (17 mm OD), F699 (19 mm OD), 699 (20 mm OD), 609 (24 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 689 bearing across India?
Yes. Logass Trade Centre supplies the 689 Pan India with technical support, from single pieces to bulk orders. Use the quote button to share your quantity and brand preference.
Need pricing on the 689?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.