Miniature & Extra Small Ball Bearings
F623 Miniature & Extra Small Ball Bearing
3 × 9 × 4 mm
F623 is a miniature & extra small ball bearing from the MXF-1 series with a 3 mm bore, a 9 mm outside diameter and a 4 mm width. It has a dynamic load rating of 553 N and a static load rating of 203 N and a speed rating of 49,500 rpm (oil lubrication), weighing about 1.65 g. The radial cross-section (D − d) is 6 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
F623 Specifications
| Bearing No. | F623 |
|---|---|
| d (Bore) | 3 mm |
| D (Outer Dia.) | 9 mm |
| D (Outer Dia.) | 9 mm |
| B (Width) | 4 mm |
| C (Flange Width) | 1 mm |
| Dynamic Load | 553 N |
| Static Load | 203 N |
| Max. RPM | 49,500 |
| Weight | 1.65 g |
| Series | Flange Type Miniature & Extra Small Ball Bearings (1.5mm–4mm bore) |
F623 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the MXF-1 series page.
Neighbouring Sizes in the MXF-1 Series
F623 — Frequently Asked Questions
What are the dimensions of the F623 bearing?
The F623 has a bore (d) of 3 mm, an outside diameter (D) of 9 mm and a width of 4 mm, so it is written 3 × 9 × 4 mm.
What is the load rating of the F623?
Dynamic load rating 553 N and static load rating 203 N. The speed rating is 49,500 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the F623 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include F623-ZZ (metal shields on both sides), F623-2RS (rubber seals on both sides). Tell us the exact designation you need in a quote request.
Which other bearings have the same 3 mm bore as the F623?
Other miniature & extra small ball bearings with a 3 mm bore include F683 (6 mm OD), 3M06 (6 mm OD), F3M08 (7 mm OD), 683 (7 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the F623 bearing across India?
Yes. Logass Trade Centre supplies the F623 Pan India with technical support, from single pieces to bulk orders. Use the quote button to share your quantity and brand preference.
Can’t find your size?
We supply sizes, brands and special versions of miniature & extra small ball bearings that are not listed on this page. Type the exact size or designation you need and send it to us for a quote.
Need pricing on the F623?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.