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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 135


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 6.06 lb

UPC Number

N/A 19714

NEMA Frame Motor Size

N/A 45, 56

Dimensional Data

Dimension A

N/A 13.250 in

Dimension B

N/A 9.875 in250.83 mm

Dimension C

N/A 6.125 in155.58 mm

Dimension D

N/A 7.00 in

Min. Dimension E

N/A 2.125 in53.98 mm

Max. Dimenson E

N/A 8.000 in203.20 mm

Min. Dimension F

N/A 0.813 in20.64 mm

Max. Dimension F

N/A 2.250 in57.15 mm

Dimension G

N/A 11.125 in282.58 mm

Slot (Dimension H)

N/A 0.375 in9.53 mm

Dimension I

N/A 0.688 in17.46 mm

Dimension J

N/A 0.375 in9.53 mm

Dimension K

N/A 2.500 in63.50 mm

Dimension L

N/A 0.313 in7.94 mm

Dimension M

N/A 2.500 in63.50 mm

Dimension N

N/A 0.438 in11.11 mm

Slot (Dimension O)

N/A 0.375 in9.53 mm

Dimension P

N/A 0.375 in9.53 mm

Dimension Q

N/A 2.125 in53.98 mm

Dimension R

N/A 0.625 in15.88 mm

Dimension S

N/A 1.125 in28.58 mm

Dimension T

N/A 3.250 in

Dimension U

N/A 1.250 in31.75 mm

Dimension W

N/A 5.625 in142.88 mm

Dimension X

N/A 8.625 in219.08 mm

Diameter (Dimension Y)

N/A 0.500 in

Diameter (Dimension Z)

N/A 0.375 in

Cubic inches

N/A 301.43750 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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