UCF 207 Cast Iron Pillow Block Ball Bearing

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UCF 207 Cast Iron Pillow Block Ball Bearing

The following matters need to be paid attention to when using UCF 207:
We UCF 207 pillow block ball bearings manufacturer:
1. Applicable environment: Mounted bearings are suitable for general industrial environments. In some special environments such as high temperature, low temperature, corrosion, etc., you need to choose mounted bearings with special requirements.


2. Assembly accuracy: The installation of mounted bearings needs to ensure its accuracy, other wise it will affect the assembly effect and bearing life.

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  • Description

UCF 207 Bearing Specifications

Pillow Block Ball Bearings No. Shaft Dia Dimensions(mm)
d
mm a e i g I z
UCF 207 35 117 92 19 15 34.0 44.4
Pillow Block Ball Bearings No. Shaft Dia Dimensions(mm)
d
mm s n Bi Weight
UCF 207 35 14 17.5 42.9 1.45

 Inner Ring of UCF 207

When the cast iron pillow block ball bearings are used at a high speed or under a heavy load, the inner ring of the ball bearing should be mounted to the shaft by means of a Interference fit.

Dimensional accuracy of the shafts to be used in the cylindrical bore bearings(Interference fit)

Shaft Diameter (mm) Deviation of tolerance in shaft
higher speed rather heavy load
m6 m7
over incl. max. min. max. min.
10 18 +18 +7 +25 +7
18 30 +21 +8 +29 +8
30 50 +25 +9 +34 +9
50 80 +30 +11 +41 +11
80 120 +35 +13 +48 +13
120 180 +40 +15 +55 +15
Shaft Diameter (mm) Deviation of tolerance in shaft
highest speed heavy load
n6 n7
over incl. max. min. max. min.
10 18 +23 +12 +30 +12
18 30 +28 +15 +36 +15
30 50 +33 +17 +42 +17
50 80 +39 +20 +50 +20
80 120 +45 +23 +58 +23
120 180 +52 +27 +67 +27

Some bearings can be installed to the shaft by means of adapter sleeves.In this method,the bearing bore is made of l:12 taper and the corresponding tapered adapter sleeve is applied.
This is a convenient method that can be used as the intermediate bearing of a long shaft.In this case,the dimensional accuracy of shaft is shown in Table.

Dimensional accuracy of shaft to be used in tapered bore bearing

Shaft Diameter (mm) Deviation of tolerance in shaft
for short shaft for long shaft
h9 h10
over incl. max. min. max. min.
10 18 o -43 o -70
18 30 o -52 o -84
30 50 o -62 o -100
50 80 o -74 o -120
80 120 o -87 o -140
120 180 o -100 o -160

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