Kobelt 5022-A, Owner'S Operation, Installation & Maintenance Manual

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KOBELT MANUFACTURING CO. LTD MNL-5022-A.docx (rev B) 16
4.2.4 Disc speed
The potential imbalance in the ventilated disc could be detrimental to rotating equipment at
high speeds. For running speeds greater than the values listed in the table below the discs must
be balanced. Under no circumstances must the running speed exceed the value given in the
right-hand column.
Table 4: Maximum Disc Speeds
Part
Number
Nominal OD
inch mm
Max. Speed
rpm
2 ” x 4 ” Series Standard Balanced
2-4-18 18 457 1450 3070
2-4-20 20 508 1260 2750
2-4-25 25 635 960 2200
2-4-30 30 762 770 1800
2-4-35 35 889 650 1550
2-4-40 40 1016 560 1350
2-4-45 45 1143 490 1200
2-4-50 50 1270 440 1070