Crankshaft bearings are double-row spherical roller bearings.Double extended Jackshaft carried on heavy-duty straight roller bearings.Model QZ-9 mud pump is a horizontal triplex single acting piston pump which is made by lake Petroleum Technology Co., Ltd utilizing American technology and API standards.Pump case are welded castings steel and steel plates.Connecting rod tip are fitted with roller bearings.

Liner Diameter |
Displacement |
Max Pressure |
Inch |
mm |
Gal/rev |
L/rev |
Gal/min |
L/S |
PSI |
MPa |
7 |
178 |
4.50 |
17.03 |
585 |
36.9 |
2,639 |
18.2 |
6.5 |
165 |
3.88 |
14.69 |
504 |
31.8 |
3,060 |
21.1 |
6.25 |
159 |
3.59 |
13.59 |
466 |
29.4 |
3,310 |
22.8 |
6 |
152 |
3.30 |
12.49 |
430 |
27.1 |
3,592 |
24.8 |
5.5 |
140 |
2.78 |
10.52 |
361 |
22.8 |
4,274 |
29.5 |
5 |
127 |
2.29 |
8.67 |
298 |
18.8 |
5,000 |
34.5 |
4.5 |
114 |
1.86 |
7.04 |
242 |
15.3 |
5,000 |
34.5 |
4 |
102 |
1.47 |
5.56 |
191 |
12.1 |
5,000 |
34.5 | |