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NTN 6307ZC3/L627 is a 63 series single-row deep groove ball bearing with a 35 mm straight bore. It features a single metal shield (Z) on one side and C3 internal clearance for applications requiring thermal expansion accommodation. Used in electric motors, pumps, fans, and general rotating machinery.
MODEL 6307ZC3/L627
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$54.06 Each
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
B (in)
0.8267
Ball material
Steel
Ball Material
Steel
Bore type
Round
Bore Type
Round
Cage material
Steel
Cage Material
Steel
Cage type
Pressed
Cage Type
Pressed
Configuration
One
D (in)
3.1496
d (in)
1.3779
Da max
2.8346 in
da max
1.8503 in
da min
1.6929 in
Dynamic load rating
8310 lbf
Dynamic Load Rating
8310 lbf
Enclosure
Single Shielded
Factor
72.0
I.D.
35 mm
Limiting speed - grease
8800 RPM
Limiting Speed - Grease
8800 RPM
Limiting speed - oil
10000 RPM
Limiting Speed - Oil
10000 RPM
Material
High Carbon Chrome Steel
O.D.
80 mm
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
Precision
ISO Class 0
r (in)
0.0590
r1
0.0196 in
Radial internal clearance
C3
Radial Internal Clearance
C3
ras max
0.059 in
Static load rating
4290 lbf
Static Load Rating
4290 lbf
Type
Deep Groove Ball Bearing
Width
0.8268
Specifications
| Bearing Data Sheet | ||
|---|---|---|
| Single Row Deep Groove Ball Bearings | ||
| NTN Part Number | 6307Z | |
| N/A (lbs) / N/A (kg) | ||
| Dimensions | Features/Options | ||||
|---|---|---|---|---|---|
| Dimension | Imperial | Metric | Option | Code | Description |
| Bore d O.D.D. Width B or W rs min D1 max a max b min ro max rns min D2 max f max da min da max Da max ras max Dx min Cy max Cz min rnas max | 1.3780 (in) 3.1496 (in) 0.8268 (in) 0.0591 (in) 3.0240 (in) 0.1291 (in) 0.0748 (in) 0.0236 (in) 0.0197 (in) 3.4094 (in) 0.0669 (in) 1.6929 (in) 1.8504 (in) 2.8346 (in) 0.0591 (in) 3.4646 (in) 0.1811 (in) 0.0669 (in) 0.0197 (in) | 35.000 (mm) 80.000 (mm) 21.000 (mm) 1.500 (mm) 76.810 (mm) 3.280 (mm) 1.900 (mm) 0.600 (mm) 0.500 (mm) 86.600 (mm) 1.700 (mm) 43.000 (mm) 47.000 (mm) 72.000 (mm) 1.500 (mm) 88.000 (mm) 4.600 (mm) 1.700 (mm) 0.500 (mm) | Series Cage Seal/Shield | 63 Z | Single Row Radial Ball Bearing 63 Series Pressed steel cage Shield |
| Basic Load Ratings | Limiting Speeds | ||||
|---|---|---|---|---|---|
| Static Dynamic | 4, 300 (LBF) 7, 500 (LBF) | 19, 100 (N) 33, 500 (N) | Oil Seals Grease | 10, 000.00 (RPM) N/A 8, 800.00 (RPM) | |
How 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.
