Caterpillar Performance Handbook, January 2017, SEBD0351-47

Estimated Ripper Production Graphs ● D8R/D8T ● D9R/D9T

Rippers

19

CONSIDERATIONS FOR USING PRODUCTION ESTIMATED GRAPHS: ● Machine rips full-time — no dozing. ● Power shift tractors with single shank rippers. ● 100% efficiency (60 min hour). ● Charts are for all classes of material. ● In igneous rock with seismic velocity of 8000 fps (2450 mps) or higher for the D11T, and 6000 fps (1830 mps) or higher for the D10T2, D9R/D9T and D8R/D8T, the production figures shown should be reduced by 25%. ● Upper limit of charts reflect ripping under ideal con- ditions only. If conditions such as thick lamination, vertical lamination or any factor which would adversely affect production are present, the lower limit should be used.

D9R/D9TWITH SINGLE SHANK

2500

1000 1250 1500 1750 2000 2250 2500 2750 3000 3250

2250

2000

A

1750

PRODUCTION (Bm 3 /hour)

1500

1250

B

1000

750

PRODUCTION (BCY/hour)

250 500 750

500

250

D8R/D8TWITH SINGLE SHANK

2 3 4 5 6 7 8 SEISMICVELOCITY (in feet per second x 1000)

2500

1000 1250 1500 1750 2000 2250 2500 2750 3000 3250

1

2

2250

SEISMICVELOCITY (in meters per second x 1000)

2000

1750

A

KEY A — IDEAL B — ADVERSE

PRODUCTION (Bm 3 /hour)

1500

1250

1000

B

750

PRODUCTION (BCY/hour)

250 500 750

500

250

2

3

4

5

6

7

8

SEISMICVELOCITY (in feet per second x 1000)

1

2

SEISMICVELOCITY (in meters per second x 1000)

Edition 47 19-81