Page 976 - Rollingbearings

16 Cam followers
Temperature Speed limits Support surfaces

limits The lange ring that is pressed onto the stud
The limiting speed listed in the product shank should be axially supported:
table is a mechanical limit that should not be
The permissible operating temperature for exceeded unless the bearing design and the • over its entire side face (ig. 13)
cam followers can be limited by: application are adapted for higher speeds • according to diameter d (product table,
1
For additional information, refer to Oper- page 978)
• the dimensional stability of the bearing ating temperature and speed, page 130 • with material that has a suficiently high
rings and rollers strength to accommodate the tightening
16 • the cage torque (table 3, page 970)
• the seals
• the lubricant
Design
Where temperatures outside the permissible considerations
range are expected, contact SKF

Bearing rings and rollers Attachment holes for

SKF cam followers are heat stabilized up to studs
at least 140 °C (280 °F)
The holes in the adjacent part of machinery
Cages that will accommodate the stud or eccentric
collar of a cam follower should be machined
Steel cages can be used at the same operat- to tolerance class H7�
ing temperatures as the bearing rings and If the requisite tightening torque for the
rollers hexagonal nut (table 3, page 970) cannot be
achieved or the cam followers are subjected
Seals to peak loads, the stud or eccentric collar
should be mounted with an interference it
The permissible operating temperature for The lead-in chamfer of the holes should be
seals depends on the seal material: ≤ 0,5 × 45°

• NBR: –40 to +100 °C (–40 to +210 °F)
Temperatures up to 120 °C (250 °F) can
be tolerated for brief periods
• PA66 sliding rings: –30 to +100 °C (–20 to
+210 °F)

Typically, temperature peaks are at the seal
lip

Lubricants

Temperature limits for greases used in SKF
cam rollers are provided in table 1, Fig. 13
page 933 For temperature limits of other Supported lange ring
SKF greases, refer to Selecting a suitable
SKF grease, page 116
When using lubricants not supplied by
SKF, temperature limits should be evaluated
according to the SKF trafic light concept
(page 117) d 1

974