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 ETR Type Tensioner
For 3/8" to 1" Pitch Roller Chains Sprockets 
with Ball Bearing Spring-Loaded                                                                                 

 

 Catalog
Number 		 Chain
Pitch		 Teeth

Load
(N) 

  A  B  C

D

E

F

G

H

 I

L

 Q

R

 M N O

Min

Max
QCT-ETR103S 

3/8" X 7/32"

21

130

250

20

23

12.5

11

56.2

7

58

74

99

127

19.7

9.2

      
QCT-ETR103D

18

11
QCT-ETR104S 

1/2" x 5/16"

16

130

250

20

23

12.5

11

56.2

7

58

74

99

127

19.7

9.2

      
QCT-ETR104D

16.5

12.5
QCT-ETR205S 

5/8" x 3/8"

17

180

420

25

28

15

12.5

70.5

9

70

87

127

163

19.7

9.2

      
QCT-ETR205D 21.8 15.3
QCT-ETR206S 

3/4" x 7/16"

15

180

420

25

28

15

12.5

70.5

9

70

87

127

163

19.7

9.2

      
QCT-ETR206D

19.4

17.7
QCT-ETR308S 

1" x 17 mm.

12

300

650

30

33

17.5

14.5

82

9

86

104

151

193

19.4

8.9

21

35

70
QCT-ETR308D

26.4

26.4

NOTE: Orientation of sprocket is supplied as shown. End user can reposition if necessary.
All dimensions are in mm unless otherwise noted.

 

Quality Transmission Components                                 40
125 Railroad Avenue, Garden City Park, NY 11040-5016
Phone: (516) 437-6700 • Fax: (516) 328-3343
e-mail: qtcsupport@econobelt.com