Bray 4 Series - Manual (Page 3)

All information herein is proprietary and confidential and may not be copied or reproduced without the expressed written
consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed
knowledge and experience with their application.
Series 04 Gear Operator Mounting and Lubrication
Manual Number OM-04-001
Date: December 11, 2009 Page 3 of 4
Typical Properties ASTM Test Method Result
NLGI Grade Number 2
Soap Type Lithium
Color Brown
Mineral Oil Viscosity, SUS @ 210°F [100°C] D2161 80
Penetration (Worked 60 Strokes) D217 285
Dropping Point (Maximum Temperature) D566 363°F [184°C]
Oil Separation D1742 5.0%
Rust Preventative Test D1743 Pass
Timken EP Test D2509 45lbs [20.4kg]
Wheel Bearing Test (60mph [660rpm] @ 250°F [121°C] leakage) D1263 2.8gms
Oxidation Stability 100hrs, psi drop D942 6
Water Washout Test (% loss @ 175°F [80°C], typ.) D1264 7
1 National Lubricating Grease Institute
Adjustment of the “Open” position
travel stop:
Looking on the end of the gear operator the •
left hand bolt is the open adjustment.
Remove the valve position indicator and view •
the position of the valve stem.
We have to consider that in the full open posi- •
tion the stem “double D” flats align with the
position of the valve disc. Similarly on the full
diameter stem the keyway position will align
with the valve disc position.
Loosen the lock nut and back off the open •
travel stop screw one turn in the counter-
clockwise direction.
Rotate the hand-wheel until the sides of the •
“double D” or the sides of the keyway are per-
pendicular with the face of the valve.
Rotate the open travel stop screw clockwise •
until the screw touches the quadrant.
Verify that the “double D” or keyway is still •
perpendicular to the valve face.
Carefully re-tighten the travel stop lock nut. •
Replace the valve position indicator. •
At this point apply a sealant to the lock nut of •
the open travel stop to ensure that it will not
be readjusted.
Lubrication Procedures
These instructions are to be used during original assembly or during re-assembly after service for lubricat-
ing Series 04 worm gear operators. Proper lubrication is necessary to insure smooth operation and long
life of the unit. Failure to adhere to these instructions may lead to loss of performance or premature failure
of the operator.
I. Lubricant
The lubricant must be a high pressure or extreme pressure petroleum grease with a lithium based thick-
ener, which meets the NLGI grade 2. The grease must exhibit a high degree of tackiness or stringiness,
which enhances its ability to cling tenaciously to the lubricated surfaces.
The grease should meet the following specifications as a minimum. Any deviation below these specifica-
tions must be approved by the Bray USA Engineering Department.