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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 145-60


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 11.43 lb

UPC Number

N/A 19718

NEMA Frame Motor Size

N/A 56, 143T

Dimensional Data

Dimension A

N/A 16.125 in

Dimension B

N/A 12.625 in320.68 mm

Dimension C

N/A 7.875 in200.03 mm

Dimension D

N/A 8.750 in

Min. Dimension E

N/A 2.750 in69.85 mm

Max. Dimenson E

N/A 10.000 in254.00 mm

Min. Dimension F

N/A 1.313 in33.34 mm

Max. Dimension F

N/A 3.438 in87.31 mm

Dimension G

N/A 13.875 in352.43 mm

Slot (Dimension H)

N/A 0.406 in10.32 mm

Dimension I

N/A 2.500 in63.50 mm

Dimension J

N/A 2.500 in63.50 mm

Dimension K

N/A 3.000 in76.20 mm

Dimension L

N/A 0.375 in9.53 mm

Dimension M

N/A 4.125 in104.78 mm

Dimension N

N/A 0.438 in11.11 mm

Slot (Dimension O)

N/A 0.406 in10.32 mm

Dimension P

N/A 0.281 in7.14 mm

Dimension Q

N/A 2.125 in53.98 mm

Dimension R

N/A 0.813 in20.64 mm

Dimension S

N/A 1.375 in34.93 mm

Dimension T

N/A 4.750 in

Dimension U

N/A 1.250 in31.75 mm

Dimension W

N/A 8.000 in203.20 mm

Dimension X

N/A 11.375 in288.93 mm

Diameter (Dimension Y)

N/A 0.625 in

Diameter (Dimension Z)

N/A 0.500 in

Cubic inches

N/A 670.19531 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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