Timken 6311-2RS Radial/Deep Groove Ball Bearing - Straight Bore, 55 mm ID, 120 mm OD, 29 mm Width, Double Sealed
- d 55 mm
- D 120 mm
- B 29 mm
- Double Rubber Seals
- C0 - Normal
Genuine Timken product, Timken
- Regular price
- $166.00
- Sale price
- $166.00
- Regular price
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Timken 6311-2RS
$166.00
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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2695 Lake George RdOxford, MI 48370
Overview
Timken 6311-2RS Deep groove ball bearing
Timken Ball Bearings
Timken® Ball Bearings are precision-engineered components designed to deliver reliable performance, high efficiency, and long service life across a wide range of industrial and automotive applications. Built with premium-grade steel and advanced heat treatment, Timken bearings provide exceptional load capacity, superior wear resistance, and smooth rotational motion even in demanding environments.
Each bearing is manufactured to exacting standards for dimensional accuracy and noise reduction, ensuring dependable operation in motors, gearboxes, pumps, conveyors, and other rotating equipment. With optimized internal geometry and advanced sealing technology, Timken ball bearings help minimize friction, extend lubrication intervals, and reduce downtime.
Why Choose Timken:
Timken has been a trusted name in motion technology for over a century, delivering innovation and performance that set the standard for bearing reliability. Whether for OEM use or replacement applications, Timken ball bearings offer consistent performance you can depend on.
Key features
- Easy to interchange, designed as metric bearings and dimensionally interchangeable with competitor metric products
- Long bearing life through high-quality steel material
- Optimized internal geometry allows for quiet and reliable operation even at high speeds
- Includes Polyrex™ EM premium lubricant on sealed and shielded deep grove bearings for reduced torque and quieter operation
- Minimize vibration and noise in electric motor applications through super finishing, preferred clearance designation and premium grease
- Two-piece riveted steel cage ensures high rigidity and strength by reducing frictional torque
Specifications
Timken 6311-2RS dimensions & specifications
- Bearing type
- Deep groove ball bearing
- Bore diameter d
- 55 mm (2.165 in)
- Outside diameter D
- 120 mm (4.724 in)
- Width B
- 29 mm (1.142 in)
- Seals / shields
- Double Rubber Seals
- Internal clearance
- C0 - Normal
- Weight
- 0.5 lb
- Brand
- Timken
- Part number
- 6311-2RS also written 63112RS
- UPC / EAN
- 087796294141
All specifications
| Bore Type | Straight |
| Bore Diameter | 55 mm |
| Outside Diameter | 120 mm |
| Overall Width | 29 mm |
| Closure Type | Double Sealed |
| Snap Ring Included | Without Snap Ring |
| Internal Clearance | C0 |
| Max Operating Temperature | 120° C |
| Precision Rating | ABEC 1 |
| Bearing Material | Steel |
| Cage Material | Steel |
| Inner Ring Width | 1.142 in |
| Fillet Radius | 0.0787 in |
| Series | 6300 |
| Manufacturer Catalog Number | 6311-2RS |
| Manufacturer UPC Number | 087796294141 |
| UPC_NO | 087796294141 |
| Weight | 3.02 lbs |
| Type Of Bearing | Ball Bearing |
| Component Type | Assembly |
| Features & Benefits | Contact seal(s) offer superior lubricant retention and bearing protection from contaminants |
| Maximum Operating RPM | 6700 RPM (grease), 10000 RPM (oil) |
| Outer Diameter Type | Cylindrical |
| Precision Class | ISO Normal/ABEC1 |
| Relubricatable | No |
| Rolling Element | Ball |
| Min Operating Temperature | -40° C |
| Row Type | Single |
| Self Aligning | No |
| Description | 6311-2RS BALL BEARINGS |
| Retainer Material | Cold Rolled Steel |
| Product Type | Radial & Deep Groove Ball Bearings |
| Long Description | The 6311-2RS is a 55 mm bore radial/deep groove ball bearing with 120 mm OD, 29 mm width, straight design, double sealed |
Cross reference
6311-2RS cross reference & equivalents
Bearings from other brands with the same boundary dimensions. Check seals, clearance, cage and precision class before you order.
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SKF
6311-2RS1SKF 6311 -2RS1 Deep Groove Ball Bearing - 55 mm ID, 120 mm OD, 29 mm Width, Cylindrical Bore, Normal
- Same size
- Same seals
- Same clearance
Sale price$81.49
Regular price$141.30In stock
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FAG
6311-C-2HRSFAG 6311 -C-2HRS Deep Groove Ball Bearing - 55 mm ID, 120 mm OD, 29 mm Width, Cylindrical Bore, Normal
- Same size
- Same seals
- Same clearance
$107.36
In stock
-
NSK
6311 DDUNSK 6311 DDU Deep Groove Ball Bearing - 55 mm ID, 120 mm OD, 29 mm Width, Cylindrical Bore, Normal
- Same size
- Same seals
- Same clearance
$85.70
In stock
-
- Same size
- Same seals
- Same clearance
$223.34
In stock
-
- Same size
- Same clearance
$196.40
In stock
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Consolidated
6311-2RS
Contact seals both sides
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NTN
6311LLU
Contact seals both sides
Reference data only. Verify specifications before you order.
Search more equivalents in the Apollo Bearing IndexTools & lubrication
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Part number decoded
What every part of 6311-2RS means
- 63
- 63xx medium deep groove ball (dimension series 03)
- 11
- Bore code 11 × 5 = 55 mm (ISO convention)
- 2RS
- Contact (lip) seals on both sides
Catalogs & documents
Timken 6311-2RS catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Product document
Timken Deep Groove Ball Bearing Catalog (opens in a new tab)
AllPagesDrop pages
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Product document
Technical Information / CAD (opens in a new tab)
AllPagesDrop pages
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Technical
Timken Engineering Manual (opens in a new tab)
PDF · 14.4 MB · English
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Catalog
Timken Tapered Roller Bearing Catalog (10481) (opens in a new tab)
PDF · 16.4 MB · English
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Catalog
Timken Spherical Roller Bearing Catalog (10446) (opens in a new tab)
PDF · 5.1 MB · English
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Catalog
Timken Ball Bearing Catalog (10734) (opens in a new tab)
PDF · 9.1 MB · English
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Catalog
Timken Housed Unit Catalog (10591) (opens in a new tab)
PDF · 15.4 MB · English
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Mounting
Timken Industrial Bearing Maintenance Manual (10213) (opens in a new tab)
PDF · 2.0 MB · English
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Guide
Timken Bearing Damage Analysis Reference Guide (5892) (opens in a new tab)
PDF · 1.9 MB · English
About the brand
About Timken
Making tapered roller bearings since 1899.
Henry Timken patented his tapered roller bearing design in 1898, and in 1899 he and his sons, H.H. and William, founded The Timken Company in St. Louis, Missouri, to make it. A few years later the company moved to Canton, Ohio; today it is headquartered in North Canton and has been listed on the New York Stock Exchange since 1922.
A tapered roller bearing has four parts: the cone (inner ring), the cup (outer ring), the tapered rollers and the cage. The cone, rollers and cage stay together as the cone assembly and separate from the cup, so cones and cups have their own part numbers and are sold alone or as a set. The tapered design carries radial and thrust loads together.
In 2003 Timken bought The Torrington Company, a leading maker of needle roller bearings, from Ingersoll-Rand. Timken also makes ball bearings and housed units under the Fafnir name, which introduced the wide inner ring ball bearing in the early 1900s.
Genuine Timken product
Founded
1899
Headquarters
North Canton, Ohio, USA
Employees (2026)
About 19,000
Operations in
45 countries
Known for
- Tapered roller bearings, inch and metric
- Spherical roller bearings
- Fafnir ball bearings and housed units
- Super precision bearings
Disclaimer: Apollo Industries is not an authorized distributor, reseller, or representative of Timken. All Timken trademarks and product names are the property of their respective owners. We sell genuine Timken products purchased through independent channels.
FAQ
6311-2RS questions & answers
What are the dimensions of the Timken 6311-2RS?
The Timken 6311-2RS 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 6311-2RS?
The Timken 6311-2RS is a deep groove ball bearing.
Is the 6311-2RS sealed or shielded?
The Timken 6311-2RS is sealed: Double Rubber Seals.
What internal clearance does the 6311-2RS have?
The Timken 6311-2RS has C0 - Normal internal clearance.
What can I use instead of the Timken 6311-2RS?
Equivalents with the same boundary dimensions include SKF 6311-2RS1, FAG 6311-C-2HRS, NSK 6311 DDU, JTEKT-KOYO 6311-2RS, Consolidated 6311-2RS, NTN 6311LLU. Check the seals, internal clearance, cage and precision class before you order.
Is this a genuine Timken bearing?
Yes. Apollo Industries sells genuine Timken products, purchased through independent channels. Apollo is not an authorized distributor, reseller, or representative of Timken.
Do you ship the 6311-2RS 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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