The Maxima-K series of large capacity single-stage liquid ring vacuum pumps require lubricating every
1500 hours of operation. Grease fittings are located on the top of each bearing housing.
Use a good quality high temperature lithium based grease of #2 consistency. Typical products are Texaco
Premium RB and Chevron SR1 #2.
Pump bearing lubricating schedule
Pump type
Pump HP
Greasing schedule
Titan
-series single-stage
.25 - 20
none required
Titan
-series single-stage
25 – 100
every 3000 hours
Titan
-series two-stage
2 – 60
every 3000 hours
Titan
-series two-stage
100 - up
consult factory
Maxima-K
-series large capacity
50 - up
every 1500 hours
Bearing Lubrication – Motor (where required)
The motors are shipped from the factory with the bearings properly packed with grease. During extended
storage of 6 months or greater, the ball-bearings should be re-lubricated prior to starting with a good quality
high temperature lithium based grease of #2 consistency. Typical products are Texaco Premium RB and
Chevron SR1 #2. Roller-bearings (V-belt drive systems) use the Texaco Premium RB or Chevron Black
Pearl EP #2.
The bearings may be lubricated with the motor running or stationary. Stationary with the motor warm is
preferred. Locate the grease inlets – there is one on each end of the motor.
Note: This is generally the case with domestic motors. European motors use sealed bearings and
do not require lubrication. Consult Factory with any questions.
Clean the area and replace the pipe plug with a grease fitting as generally they are not equipped with a
grease fitting. Remove the grease drain plug, located at the lower portion of each motor face (typically a
plastic plug), and loosen any hardened grease that may block the drain. Add the recommended volume of
the previously described grease using a hand operated grease gun. Run the motor for two hours. Replace
the pipe plug in grease drain.
Mixing of lubricants is not recommended due to possible incompatibility. Signs of incompatibility are
extreme soupiness from the grease relief drain or from the shaft opening. If changing a lubricant, grease
and then re-grease after 100 hours of service.
Frequency/volume of greasing is based on service conditions, speed and frame size. See table below.
Standard conditions:
8 hour day operation, normal or light loading, clean environment at a 100 ºF
maximum ambient temperature.
Severe conditions:
24 hour operation or shock loading, vibration, dirty or dusty environment, running at a
100 ºF to 120 ºF ambient temperature.
Extreme conditions:
heavy shock, vibration, or dust.
See table below for lubricating details.
Motor bearing lubricating schedule
Lubrication Frequency – Ball Bearings
Roller bearings – divide time by 2
Lubrication
Volume
NEMA Volume
Speed
(RPM)
NEMA
Frame
Standard
Conditions
Severe
Conditions
Extreme
Conditions
Frame (Cubic
inches)
1800
182-215
3 years
1 year
6 months
182-215
0.5
1800
254-365
2 years
6-12 months
3 months
254-286
1.0
1800
404-449
1 year
6 months
1-3 months
324-365
1.5
3600
ALL
6 months
3 months
1 month
404-449
2.5
Dekker Vacuum Technologies, Inc. – Vmax/13
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