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Adjustable Motor Bases

Sliding and Tilting Bases
    It is necessary to change the distance between the motor and driven shaft in order to change speed with an adjustable center drive. The best way to do this is with an adjustable motor base. Lovejoy offers four basic types of motor bases to satisfy requirements of space, convenience, interchangeability, motor frame size, and economy.
Sliding Cast Iron Type
    Models: 135, 145-60, 301, 302-3, 403, 305-8 and 310-30
    The original Lovejoy design, made of durable cast iron and steel.
    For remote control in hazardous or inconvenient locations, Lovejoy offers electric servo motor-controlled bases in some models of the cast iron bases, both direct coupled (ERC) and chain-driven (MRC). Also, stainless steel guide rods and adjusting screws are available on some models for severe environments or applications subject to wash down.
Unit of Measure





N/A 302-3


N/A Pump Mounting Bracket


N/A Cast Iron


N/A Adjustable Center VSP Drive

Model Compatibility

N/A for NEMA Motor Frame Sizes


N/A One Adjustable Motor Base


N/A 19.38 lb

UPC Number

N/A 19781

NEMA Frame Motor Size

N/A 143T, 145T, 182T, 184T

Dimensional Data

Dimension A

N/A 19.375 in

Dimension B

N/A 16.000 in406.40 mm

Dimension C

N/A 8.500 in215.90 mm

Dimension D

N/A 10.000 in

Min. Dimension E

N/A 3.000 in76.20 mm

Max. Dimenson E

N/A 13.875 in352.43 mm

Min. Dimension F

N/A 1.875 in47.63 mm

Max. Dimension F

N/A 3.875 in98.43 mm

Dimension G

N/A 17.250 in438.15 mm

Slot (Dimension H)

N/A 0.406 in10.32 mm

Dimension I

N/A 3.000 in76.20 mm

Dimension J

N/A 2.125 in53.98 mm

Dimension K

N/A 3.500 in88.90 mm

Dimension L

N/A 0.375 in9.53 mm

Dimension M

N/A 4.125 in104.78 mm

Dimension N

N/A 0.750 in19.05 mm

Slot (Dimension O)

N/A 0.500 in12.70 mm

Dimension P

N/A 0.500 in12.70 mm

Dimension Q

N/A 2.125 in53.98 mm

Dimension R

N/A 0.813 in20.64 mm

Dimension S

N/A 1.500 in38.10 mm

Dimension T

N/A 5.0 in

Dimension U

N/A 2.000 in50.80 mm

Dimension W

N/A 9.313 in236.54 mm

Dimension X

N/A 13.250 in336.55 mm

Diameter (Dimension Y)

N/A 0.875 in

Diameter (Dimension Z)

N/A 0.625 in

Cubic inches

N/A 968.75000 in³



  • Models are available to accommodate motors from fractional through 30 horsepower
  • The independent, slotted motor mounting rails offer great flexibility of design, as they can be used to mount NEMA motor frames as well as IEC motors and other products (gearmotors, gear reducers, etc.)
  • Adjustable maximum and minimum speed stops are included
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