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Clausing 8520 vertical mill bearing sets

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rchrdinaz

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Sep 4, 2013
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11
Hello,

I plan on keeping my Clausing 8520 vertical mill for a very long time. As a proactive measure, I would like to buy and store a set of quill bearings just in case. Does anyone know who might make replacement bearing and maybe even have part numbers. Thanks in advance.

Cheers,

Richard in AZ
 

KenS

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Aug 2, 2011
Messages
146
Hello,

I plan on keeping my Clausing 8520 vertical mill for a very long time. As a proactive measure, I would like to buy and store a set of quill bearings just in case. Does anyone know who might make replacement bearing and maybe even have part numbers. Thanks in advance.

Cheers,

Richard in AZ

Richard,

From an excellent (but slow loading) page that all Clausing 8520 owners should bookmark:

http://www.wentztech.com/metalworking/equipment/clausing-8520-mill/

[h=1]Bearings[/h] All the bearings with the exception of the lower head bearings are commonly available from many sources. The Lower Head Bearings are speced as a Class 3 which specified as having a runout of 0.0003, and were sold as a ground matched set . They are no longer available from Clausing.

Lower head bearings

    • Qty (2)
    • Clausing number 044-005
    • Size (25x52x15)
    • Use Fafnir 7205WNSU
    • These are 39 degree angular contact bearings.
    • They are flush ground for minimum preload when duplexed (2 bearings together)

Upper Head bearing

Qty 1
Clausing Part Number
Use Fafnir 304KDD or, sub 6304ZZ/ND 3304/KBC 6304
Size 20x52x15mm


Upper spindle bearing

Qty 1
Clausing PN 044-016
Size 20x47x14mm
Use MRC 204SFF, FAG equiv to
Use Fafnir 204KDD, 6204ZZ,304KDD


Spindle driven step pulley bearings

Qty 2
Clausing PN 044-007
Size 25x47x12mm
Use Fafnir 9105KDD, Fafnir 9105KDD, 6005ZZ


Tables and Upper idler pulley

Qty 6
Clausing PN 044-004
Size (12x32x10mm)
Use Fafnir 201KDD, Fafnir 201KDD, 6201ZZ


Lower Idler pulley

Qty 1
Clausing PN 044-003
Size 15x35x11mm
Use Fafnir 202KDD, Fafnir 202KDD, 6202ZZ


Knee screw upper trust bearing

Qty 1
Clausing PN 044-011
Use Andrews D-3, standard D-3 thrust bearing for replacement
Size A .625 – B 1.244 – C .563


Knee shaft bearings

Qty 2
Clausing PN 044-008
Use NICE 1607DS, 1607ZZ, 1607
NICE 160105 ( Part Number of bearings in my mill)
Size A 7/16 – B 29/32 – C 5/16


 

rchrdinaz

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KenS,

The list is comprehensive and the link is an excellent find. Thank you.
 
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If you fellows don't mind, I am going to move this thread to the Clausing forum instead of the general help forum.
 
D

Deleted member 17524

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Thank you Ken. I have the original owners manual for mine but it is not this comprehensive. I down loaded yours to add to the manual. Again, thank you.

You are ahead of me this time Terry.

"Billy G"
 

Yetiguy11

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Nov 19, 2014
Messages
3
I picked these up from McMaster Carr for my 8520. They are all SKF bearings.

QTY 2 25x47x12mm shielded 6661K18
QTY 1 20x47x14mm shielded 6661K45
QTY 1 20x52x15mm shielded 6661K65
QTY 2 25x52x15mm angular 6680K16
 
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