Castomer

Deep groove ball bearing 3801 – 12×21×7 mm

1 offer · 1 manufacturer · net prices from PLN 55.02 · dispatch in 2 working days

3801 is a deep groove ball bearing with a 12 mm bore, 21 mm outside diameter and 7 mm width, open design (no seals) – for externally lubricated arrangements. The dimensions are standardised, so items from different manufacturers with the same clearance and sealing are interchangeable 1:1. All brands with current net prices are listed below.

bore d
12 mm
outside D
21 mm
width B
7 mm
sealing
open
net price from
PLN 55.02

Brands and prices 3801

Net price per piece, gross incl. 23% VAT. Selected items go into one enquiry – we reply within 24 h, with better prices for larger quantities.

BrandManufacturer designationClearanceNet priceAvailability
FAG3801-B-TVH40° contact angle, solid polyamide cage (FAG)CN
PLN 55.02PLN 67.67 gross
supplier stockdispatch in 2 working days

Can't see your brand? Ask for an offer – we reply within 24 h.

Other versions of 3801

The same size in another design – open, shielded, tapered bore.

2RS, 2Z or C3 – which to choose?

2RS (two rubber seals) keeps dust and moisture out but limits speed. 2Z (metal shields) does not touch the ring, so it runs faster and cooler but protects less. 2RZ is the compromise – a non-contact seal.

Choose C3 clearance when the bearing runs hot (electric motors, fans) or with a tight shaft fit. Normal clearance CN is enough for ordinary applications.

The dimensions of 3801 are identical for every manufacturer, so the items in the table are interchangeable – just match the clearance and sealing.

Questions about 3801

What are the dimensions of bearing 3801?

Bore 12 mm, outside diameter 21 mm, width 7 mm. Standardised dimensions – the same for every manufacturer.

How much does bearing 3801 cost?

At Castomer from PLN 55.02 to PLN 55.02 net per piece depending on the manufacturer (FAG). Prices are updated from supplier warehouses; larger quantities get an individual offer.

What is the delivery time for 3801?

Dispatch in 2 working days from supplier warehouses in the EU. Availability is confirmed in the reply to your enquiry.

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