Nachi NU311 EG Cylindrical Roller Bearing - 55 mm ID, 120 mm OD, 29 mm Width
- d 55 mm
- D 120 mm
- B 29 mm
- C0 - Normal
Genuine Nachi product, Nachi
- Regular price
- $142.17
- Sale price
- $142.17
- 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 NU311 EG
$142.17
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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90-day returns
Hassle-free returns on unused items within 90 days.
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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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We offer special rates for businesses and bulk orders.
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2695 Lake George RdOxford, MI 48370
Overview
Nachi NU311 EG Cylindrical roller bearing
Cylindrical Roller Bearing, floating design with polyamide cage and normal clearance
The Nachi NU311 EG is a single-row cylindrical roller bearing of 55 mm bore, 120 mm outside diameter and 29 mm width, guided by a glass-fibre reinforced polyamide cage. The moulded cage is lighter than pressed steel, runs more quietly, and its elasticity lets it absorb shock and tolerate momentary misalignment better, which raises the practical speed limit of the bearing. The flangeless inner ring separates for mounting and allows free axial movement of the shaft. Normal CN clearance, rated -30 to +150 degrees C.
Key features
- Glass-fibre reinforced polyamide cage
- Higher speed capability and quieter running
- Floating design accommodates shaft expansion
- High radial load capacity from line contact
- Normal CN radial internal clearance
- Operating range -30 to +150 degrees C
Specifications
Nachi NU311 EG dimensions & specifications
- Bearing type
- Cylindrical roller bearing
- Bore diameter d
- 55 mm (2.165 in)
- Outside diameter D
- 120 mm (4.724 in)
- Width B
- 29 mm (1.142 in)
- Internal clearance
- C0 - Normal
- Weight
- 3.22 lb
- Brand
- Nachi
- Part number
- NU311 EG also written NU311EG
- UPC / EAN
- 4991893399400
All specifications
Dimensions
| Bore Diameter | 55 mm |
| Outside Diameter | 120 mm |
| Width | 29 mm |
Properties
| Bore | Cylindrical bore |
| Cage | Polyamide cage |
| Clearance | Normal radial clearance |
| Current insulation | No current insulation |
| Design | Floating bearing, inner ring removable on both sides |
| Outer ring | Without groove/lubrication holes |
| Roller rows | Single row bearing |
| Seal | None, open bearing |
| Temperature range | -30 to +150 °C |
| Tolerance class | Tolerance class P0/PN2 / ABEC 1 |
Logistics
| Product Net Weight | 1.46 |
Cross reference
NU311 EG cross reference & equivalents
Bearings from other brands with the same boundary dimensions. Check seals, clearance, cage and precision class before you order.
-
SKF
NU311 ECPSKF NU311 ECP Cylindrical Roller Bearing - 55 mm ID, 120 mm OD, 29 mm Width, Cylindrical Bore, Normal
- Same size
Sale price$201.45
Regular price$298.08In stock
Reference data only. Verify specifications before you order.
Search more equivalents in the Apollo Bearing IndexTools & lubrication
Complete the job for your NU311 EG
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Part number decoded
What every part of NU311 EG means
- NU
- Cylindrical roller bearing, ribs on the outer ring only; the inner ring floats
- 3
- NU3xx cylindrical roller, medium (dimension series 03)
- 11
- Bore code 11 × 5 = 55 mm (ISO convention)
- EG
- High-capacity cylindrical roller bearing with a nylon cage
Catalogs & documents
Nachi NU311 EG 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
NU311 EG questions & answers
What are the dimensions of the Nachi NU311 EG?
The Nachi NU311 EG has a 55 mm bore (d), a 120 mm outside diameter (D) and a 29 mm width (B). In inches: 2.165 × 4.724 × 1.142 in.
What type of bearing is the NU311 EG?
The Nachi NU311 EG is a cylindrical roller bearing.
What internal clearance does the NU311 EG have?
The Nachi NU311 EG has C0 - Normal internal clearance.
What can I use instead of the Nachi NU311 EG?
Equivalents with the same boundary dimensions include SKF NU311 ECP. Check the seals, internal clearance, cage and precision class before you order.
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 NU311 EG 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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