Page 17 - SKF-Food-Line-ball-bearing-units

Mounting procedure 2 Mount any components that are on the NOTE
shaft between the two SKF Food Line ball For attachment bolt hole sizes, for refer-
1 Remove any burrs on the shaft with emery bearing units ence see table 4 to 7
cloth or a fine file, wipe clean with a cloth Slide the SKF Food Line ball bearing unit
Depending on loads and speeds, define onto the shaft with grub screws facing
the appropriate shaft tolerance from outwards and ensure that shaft is correctly
tables 1 and 2, and check the shaft diam- placed (fig. 10)
eter Mount any components that are on 3 For plummer block units, fit the attach-
the shaft between the two SKF Food Line ment bolts but do not tighten them
ball bearing units make sure the housing (fig 11) For flanged units, fasten them
base and mating surfaces are clean and securely to the machine wall For compos-
free of any debris or burrs Ensure the ite housings assure that the metallic
supporting surface is flat The flatness bushes in bolt areas will be in contact with
should be within the IT7 tolerance grade the machine wall
and the roughness should be 4 Mount the other SKF Food Line ball bear-
Ra ≤ 12,5 μm If the housing requires ing unit on the other end of the shaft fol- Fig. 9
shims or adjustment, the shims must lowing the phases shown in fig. 9 to 11
extend the full length and width of the
base (fig. 9)

Fig. 10

Table 4 Table 5 Fig. 11
Attachment bolt hole sizes according to Attachment bolt hole sizes according to
DIN EN 20273 ASME
Units for metric shafts Units for inch shafts
Bolt size Trough hole Bolt size Trough hole
diameter diameter
G d m G d m
mm mm in in

8 9 3 /8 13 /32
10 11 7 /16 15 /32
12 13,5 1 /2 9 /16
16 17,5 5 /8 11 /16

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