Sandvik
Conveyor Components
3/2001
SELECTION AND LOAD RATING OF ROLLER
FOR INDOOR CONVEYORS
When selecting the roller, both the shaft load and the shell
load must be considered. The study for the shaft load covers
also the bearing load rating and the study for the shell covers
the end cap load rating.
Selection example: In this case the even load 2800 kg is carried
by 8 rollers, roller length 600 mm. Load for one single roller:
FC =
P 28
=
kN = 3.5 kN roller
8
8
Based on values L = 600 mm and FC = 3.5 kN
A
Select the shaft diameter d = 20 and shaft end
alternative D according to diagram 1 (loading
capacity of shaft end A is not enough).
B
Check the roller shell load according to diagram 2 and
select for the shell 70 x 2.0 (when selecting the
diameter take notice the conveyed unit).
C
Based on the points
A and
GS - 70 x 2.0 - 20D - 600
B select roller type
or
GA 70 x 2.0 - 600
P = 2800 kg
Diagram 1: Shaft load
Diagram 2: Shell load
FC (N)
FC (N)
10000
9000
10000
9000
8000
8000
7000
d 20
6000
5000
88.9 x 2.9
80.0 x 3.0
7000
6000
5000
d 25
4000
3000
3000
d 25
2000
80.0 x 1.8
63.5 x 2.9
4000
70.0 x 2.0
200
400
600
800
1000
1200
1400
Roller length L (mm)
d 20
1500
d 20
1000
d 17
= GA-rollers
= GS- and GK-rollers
d 15
d 17
= GS- and GK-rolles
400
d 15
200
shaft ends D and E
400
600
800
1000
Roller length L (mm)
1200
shaft end A
1400
We reserve the right for modifications without prior notice.
Sandvik
Conveyor Components
3/2001
Diagram 3
Diagram 4
Roller with shaft end A is loosely fixed to the frame.
Loading according to diagram 1.
Shell loading values are for an even load. Loading
according to diagram 2.
Shaft ends D and E are tightly fixed to the frame and
due to a smaller shaft bend their load capacity is higher.
Tight fixing junction requires a sturdy frame construction.
Loading according to diagram 1.
Values in diagram 2 must be multiplied by 0.75, for point
load situations. Roller shells with non-standard wall
thicknesses are also available.
Standard shaft end alternatives for GS- and GK-rollers
Type A
d
B
U
M
15
12
M8 x 1 5
M1 2
17
12
M8 x 1 5
M1 6
20
14 (15)
M1 2 x 2 0
M1 6
25
18
M1 6 x 2 5
M1 6
Type D
Type E
We reserve the right for modifications without prior notice.