Part number · Miniature & MR bearings
684 Bearing – 4 × 9 × 2.5 mm
684 miniature ball bearing. Available – ask for stock. Supplied in multiple brands, across India, with same or next-day delivery in Mumbai.
684 bearing price
Prices depend on brand and quantity, so we quote today’s rate. Send the quantity on WhatsApp and we reply during working hours with price and stock.
Available – ask for stock · Multiple brands
684 is a miniature ball bearing measuring 4 × 9 × 2.5 mm: 4 mm bore, 9 mm outside diameter and 2.5 mm width. The shielded 684ZZ is 4 mm wide. It is an open bearing, with no shields or seals, lubricated by the machine or by oil.
Other 4 mm bore bearings in our special range: MR84ZZ, 604ZZ, 634ZZ.
We supply the 684 in multiple brands, from a single piece for a repair to bulk quantities, and can source more at short notice.
Why 684 prices vary
- Genuine or copy: fakes sell far below the real price and fail early. We sell only genuine bearings.
- Version: sealed, shielded, C3, stainless and low-noise versions cost more than the open bearing.
- Quantity: bulk and repeat orders are priced lower.
So we quote today’s price for each brand rather than list one number. Ask for the 684 price on WhatsApp.
684 dimensions
| Bore (d) | 4 mm |
|---|---|
| Outside diameter (D) | 9 mm |
| Width (B) | 2.5 mm (shielded: 4 mm) |
| Seals / shields | open |
| Material | Chrome steel |
Also searched as
People write this bearing in different ways. All of these refer to the same 4 × 9 × 2.5 mm part:
Where the 684 is used
Miniature ball bearings with bores of just a few millimetres, made to tight tolerances for small, fast-running parts.
- Small DC motors
- Printers & 3D printers
- RC models & drones
- Instruments & meters
- Dental & medical devices
- Fishing reels & hobby tools
Buying for a factory or workshop?
- GST invoice with every order
- One quotation for your whole list
- No minimum order
- Same or next-day delivery in Mumbai; dispatch across India
Updated
Questions
684 bearing: frequently asked
What size is the 684 bearing?
684 measures 4 × 9 × 2.5 mm (bore × outside diameter × width). The shielded 684ZZ is 4 mm wide.
Is 684 available?
Yes, 684 is available – ask us for current stock. We supply it in multiple brands. Send the quantity on WhatsApp or through the quote form.
Have a part number, or just a worn-out bearing?
Send it to us. We will tell you what it is, what it costs, and how soon it can be at your door.