Brother HL-7050 Service Manual page 312

APPENDIX
APPENDIX 17.
The diameter and circumference of each roller are listed below;
No.
1
2
3
4
5
6
7
* The circumference of Development Roller is not in agreement with the numerical value
which applied the circular constant to the diameter.
DIAMETER / CIRCUMFERENCE OF ROLLERS
Parts Name
First Paper Feed Roller
Paper Feed Roller
Transfer Roller
Photosensitive Drum
Heat Roller
Pressure Roller
Development Roller
Diameter (Circumference)
13.8 mm (43.3 mm)
14.0 mm (44.0 mm)
17.7 mm (55.6 mm)
29.97 mm (94.1 mm)
34.32 mm (107.8 mm)
35.0 mm (110 mm)
20.0 mm (43.2 mm)*
A-18