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RO-64 ENGINEERING DATA
Power End
Model Triplex Pump RO-64
Maximum Input HP at Speed 33 at 550 rpm
Rated Continuous Plunger Load 2,851 lbs.
Stroke 2-1/2"
Maximum Rated Continuous Speed 550 rpm
Normal Continuous Speed Range 150 to 500 rpm
Minimum Speed 100 rpm
Oil Capacity 5 U.S. Quarts
Viscosity, S.S.U. at 210ºF 70 to 84
Power End Oiling System Splash & Scoop
Power Frame, One Piece Cast Iron
Crosshead, Full Cylindrical Cast Iron
Crosshead, Diameter x Length 4" x 4-1/2"
Crankshaft Ductile Iron
Crankshaft Diameters:
At Drive Extension
At Tapered Roller Bearings
At Crankpin Bearings, Diameter x Length
2.500/2.499"
3.35"
2.750" x 2"
Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620
Wrist Pin Bushing, SAE 660, Diameter x Width 1-5/16" x 2"
Main Bearings, Tapered Roller Timken
Crankpin Bearings, Precision Automotive Babbitt-Lined
Extension (Pony) Rod:
Integral with Plungers, 2-1/4" thru 1-3/8"
Separate with Plungers, 1-1/4" thru 3/4"
416 S.S.
416 S.S.
Connecting Rod, Automotive Type Ductile Iron
Average Crosshead Speed:
At 550 rpm 229 fpm
Minimum Life Expectancy, Main Bearings, L
10
100,000+hr
Liquid End
Plunger Size Range, Diameter 2-1/4" thru 1"
Maximum Continuous Working Pressure 3,000 psi
Hydrostatic Test 4,500 psi
Discharge Connection Size 1-1/2" NPTF
Suction Connection Size 2-1/2" NPTF
Available Liquid End Materials, ASTM:
Nickel Aluminum Bronze
Stainless Steel Block
B148-C955
Various Grades
RO-64 ENGINEERING DATA
Liquid End (Continued)
Plunger Type Rokide
®
Stainless Steel:
Chromium Oxide-Coated 416 S.S.
Stuffing Boxes, Field-Removable and Replaceable:
Stainless Steel, Hardened
Carbon Steel
17-4PH
1020
Packing Types Available:
Gland-loaded, Nonadjustable
Spring-loaded, Cup-Type
Spring-loaded,Braided Teflon
®
& Kevlar
®
Spring-loaded, Garlock
Style 838
Style 120X
Style 140/141
Style 8921K
Valve Cover and
Cylinder Head Plugs
416 S.S. or
316 S.S.
Retainer Plates, Steel, ASTM A536 80-55-06
Seals, Stuffing Boxes, Valve Covers, Cylinder Heads Buna-N
Bolting, High Strength, Heat Treated Alloy Steel
Available Valve Types:
Standard, Acetal Resin
Optional, Hardened and Lapped
Double Stem-Guided
Delrin
®
17-4PH S.S.
17-4PH S.S.
Valve Spring Material Inconel
®
Valve Seat, Liquid Passage Areas
Plate (Disc) Valves, (Delrin
®
or S.S.)
Double Stem-Guided Valve
2.3 sq. in.
1.5 sq. in.
Average Liquid Velocity with 2-1/4" Plungers,
Plate Valves:
At 550 Crankshaft rpm
At 350 Crankshaft rpm
6.6 fps
4.2 fps
Average Liquid Velocity with 2-1/4" Plungers,
Stem-Guided Valves:
At 550 Crankshaft rpm
At 350 Crankshaft rpm
11.2 fps
7.1 fps
Average Liquid Velocity 2-1/4" Plungers at 550 rpm:
Suction Manifold
Discharge Manifold
4.7 fps
12.8 fps
General
Overall Dimensions:
Length
Width
Height
36-1/4"
28-1/4"
14-3/4"
Approximate Weights:
With Nickel Aluminum Bronze Liquid End
With Ductile Iron Liquid End
With Forged Steel Liquid End
750 lbs.
730 lbs.
775 lbs.
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