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Timken 6318-ZZ-C3 is a deep groove ball bearing with a 90 mm bore, 190 mm OD, and 43 mm width. It features metal shields (ZZ) on both sides for moderate contamination protection and has C3 radial internal clearance for motor and general industrial applications. The bearing has a dynamic load rating of 142.6 kN and a static load rating of 107.2 kN.
View suggested Nachi Bearing alternativeSave $282.94 on MROSupply.com preferred brand for this item - Nachi Bearing 6318ZZC3
MODEL 6318-ZZ-C3
$480.66 Each
Prices are subject to change
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Returnable: Yes
319000 lbf Type
NJ
4.0157 in O.D. (in)
300 mm 11.811 Outer ring width:102 mm
4.0157 in Reference thermal speed rating (grease)
1400 RPM Static radial rating:1420000 N
6.7000 in Inner ring width
102 mm
Bearing Type
Standard DGBB
Bore
90 mm
Bore Size d
90 mm
C0r - Static Load Rating
107200 N
Clearance
C3
Cr - Dynamic Load Rating
142600 N
Design units
Metric Inner ring backing diameter:171 mm
Dynamic load rating
142.6 kN
Features
Shields
Grease reference speed
4800 rpm
Grease Reference Speed
4800 rpm
Oil reference speed
6900 rpm
Oil Reference Speed
6900 rpm
Outside Diameter D
190 mm
Outside Ring Width B
43 mm
Radius Rs min
3 mm
Static load rating
107.2 kN
Timken’s deep groove ball bearings deliver reliable performance in a wide range of applications and conditions. With super-finished raceways and controlled geometries, our premium design helps ensure consistent quality.
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read moreHow do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more