Oregon Harvester - Saw Chain Speed and Cutting Safety; Saw Chain

Mechanical Timber Harvesting Handbook 12
Saw Chain Allowable Spindle RPM
Drive
Sprocket Teeth
RPM
(.404" Pitch)
RPM
(3/4" Pitch)
Maximum Recommended Maximum
7 - 6500 7600
8 - 5700 6700
9 13100 5100 5900
10 11800 4500 5300
11 10700 4100 4800
12 9800 3800 4400
13 9000 3500 4100
14 8400 3200 3800
15 7800 3000 3500
16 7300 - -
17 6900 - -
18 6500 - -
19 6200 - -
20 5900 - -
21 5600 - -
22 5300 - -
• Recommended and Maximum .404" saw chain speed:
8000 ft/min (40.64 m/s)
• Recommended 3/4" saw chain speed:
6000 ft/min (30.48 m/s)
• Maximum 3/4" saw chain speed:
7000 ft/min (35.56 m/s)
Operational Recommendations