Nachi 1204 KC3 Self-Aligning Ball Bearing - 20 mm ID, 47 mm OD, 14 mm Width, Tapered 1:12 Bore, C3
- d 20 mm
- D 47 mm
- B 14 mm
- C3 - Loose
Genuine Nachi product, Nachi
- Regular price
- $56.88
- Sale price
- $56.88
- Regular price
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Same-day shipping
Order by 3 PM ET for same-day shipping
Free shipping on orders over $100
Use code at checkout.
Nachi 1204 KC3
$56.88
Why Apollo USA
Bearings from Apollo Industries, Oxford, Michigan
Apollo Industries supplies bearings, seals and maintenance tools to businesses across the US, with real people on the phone when you need a part matched.
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Same-day shipping
Order by 3 PM EST for same-day shipping.
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Free shipping over $100
All orders over $100 ship free by ground with code FREESHIP.
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Price match
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Expert support
Support staff available by phone, web chat or email.
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Need tax exemption or quantity pricing?
We offer special rates for businesses and bulk orders.
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2695 Lake George RdOxford, MI 48370
Overview
Nachi 1204 KC3 Self-aligning ball bearing
Self-Aligning Ball Bearing with tapered bore and increased clearance
The Nachi 1204 KC3 is a double-row self-aligning ball bearing measuring 20 mm bore by 47 mm outside diameter by 14 mm width, on a 1:12 tapered bore. The taper lets the bearing be mounted with an adapter sleeve on a plain shaft, so it can be positioned anywhere along an unmachined length rather than needing a turned and ground seat, which is why this combination dominates line shafting and conveyor drives. C3 starting clearance allows for the reduction that occurs as the bearing is drawn up the taper. Self-aligning, sheet steel cage, rated -30 to +150 degrees C.
Key features
- Tapered 1:12 bore for adapter sleeve mounting
- Mounts anywhere on a plain, unmachined shaft
- Increased C3 clearance before mounting
- Self-aligning under misalignment and deflection
- Sheet steel cage, very low friction
- Operating range -30 to +150 degrees C
Specifications
Nachi 1204 KC3 dimensions & specifications
- Bearing type
- Self-aligning ball bearing
- Bore diameter d
- 20 mm (0.787 in)
- Outside diameter D
- 47 mm (1.85 in)
- Width B
- 14 mm (0.551 in)
- Internal clearance
- C3 - Loose
- Weight
- 0.26 lb
- Brand
- Nachi
- Part number
- 1204 KC3 also written 1204KC3
All specifications
Dimensions
| Bore Diameter | 20 mm |
| Outside Diameter | 47 mm |
| Width | 14 mm |
Properties
| Ball rows | Double row bearing |
| Bore | Tapered bore (1:12) |
| Cage | Sheet steel cage |
| Clearance | Slightly increased radial clearance |
| Inner ring | Standard version |
| Material | Standard bearing steel |
| Seal | None, open bearing |
| Temperature range | -30 to +150 °C |
| Tolerance class | Tolerance class P0/PN2 / ABEC 1 |
Logistics
| Product Net Weight | 0.12 |
Tools & lubrication
Complete the job for your 1204 KC3
Mount it without damage and keep it lubricated. Tick what you need and add it with one click.
Part number decoded
What every part of 1204 KC3 means
- 12
- 12xx self-aligning ball, light (dimension series 02)
- 04
- Bore code 04 × 5 = 20 mm (ISO convention)
- K
- Tapered bore, taper 1:12
- C3
- Radial internal clearance greater than normal (CN)
Catalogs & documents
Nachi 1204 KC3 catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Catalog
Nachi Ball & Roller Bearings (B2100E-4) (opens in a new tab)
PDF · English
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Catalog
Nachi Deep-groove Ball Bearings, QUEST (B3402E-2) (opens in a new tab)
PDF · English
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Catalog
Nachi Spherical Roller Bearings (B1032E-5) (opens in a new tab)
PDF · English
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Catalog
Nachi Radial Ball Bearings (B4031E-2) (opens in a new tab)
PDF · English
About the brand
About Nachi
Nachi-Fujikoshi, founded in Toyama, Japan, in 1928.
Nachi-Fujikoshi was founded on 21 December 1928 in Toyama City, Japan, as Fujikoshi Steel Industry. It makes bearings alongside cutting tools, hydraulics, robots and specialty steel. Its North American headquarters is in Greenwood, Indiana.
Genuine Nachi product
Founded
1928
Headquarters
Toyama, Japan
Known for
- Deep groove ball bearings (QUEST)
- Spherical roller bearings
- Precision bearings
- Ball screw support bearings
Disclaimer: Apollo Industries is not an authorized distributor, reseller, or representative of Nachi. All Nachi trademarks and product names are the property of their respective owners. We sell genuine Nachi products purchased through independent channels.
FAQ
1204 KC3 questions & answers
What are the dimensions of the Nachi 1204 KC3?
The Nachi 1204 KC3 has a 20 mm bore (d), a 47 mm outside diameter (D) and a 14 mm width (B). In inches: 0.787 × 1.85 × 0.551 in.
What type of bearing is the 1204 KC3?
The Nachi 1204 KC3 is a self-aligning ball bearing.
What internal clearance does the 1204 KC3 have?
The Nachi 1204 KC3 has C3 - Loose internal clearance.
Is this a genuine Nachi bearing?
Yes. Apollo Industries sells genuine Nachi products, purchased through independent channels. Apollo is not an authorized distributor, reseller, or representative of Nachi.
Do you ship the 1204 KC3 the same day?
In-stock orders placed by 3 PM EST ship the same day. All orders over $100 ship free by ground with code FREESHIP.
Can I get quantity pricing or buy tax-exempt?
Yes. Apollo offers special rates for businesses and bulk orders. Use Request a quote on this page or call (248) 429-9073.
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