Miniature & Extra Small Ball Bearings
F604 Miniature & Extra Small Ball Bearing
4 × 12.5 × 4 mm
F604 is a miniature & extra small ball bearing from the MXF-1 series with a 4 mm bore, a 12.5 mm outside diameter and a 4 mm width. It has a dynamic load rating of 873 N and a static load rating of 324 N and a speed rating of 42,300 rpm (oil lubrication), weighing about 3.1 g. The radial cross-section (D − d) is 8.5 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
F604 Specifications
| Bearing No. | F604 |
|---|---|
| d (Bore) | 4 mm |
| D (Outer Dia.) | 12.5 mm |
| D (Outer Dia.) | 12.5 mm |
| B (Width) | 4 mm |
| C (Flange Width) | 1 mm |
| Dynamic Load | 873 N |
| Static Load | 324 N |
| Max. RPM | 42,300 |
| Weight | 3.1 g |
| Series | Flange Type Miniature & Extra Small Ball Bearings (1.5mm–4mm bore) |
F604 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the MXF-1 series page.
F604-ZZ
metal shields on both sides
F604-2RS
rubber seals on both sides
Neighbouring Sizes in the MXF-1 Series
F604 — Frequently Asked Questions
What are the dimensions of the F604 bearing?
The F604 has a bore (d) of 4 mm, an outside diameter (D) of 12.5 mm and a width of 4 mm, so it is written 4 × 12.5 × 4 mm.
What is the load rating of the F604?
Dynamic load rating 873 N and static load rating 324 N. The speed rating is 42,300 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the F604 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include F604-ZZ (metal shields on both sides), F604-2RS (rubber seals on both sides). Tell us the exact designation you need in a quote request.
Which other bearings have the same 4 mm bore as the F604?
Other miniature & extra small ball bearings with a 4 mm bore include F4M07 (7 mm OD), 633 (7 mm OD), F684 (8 mm OD), 4M07 (8 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the F604 bearing across India?
Yes. Logass Trade Centre supplies the F604 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 F604?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.