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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 310-30


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 120.00 lb

UPC Number

N/A 19816

NEMA Frame Motor Size

N/A 215T, 254T, 256T, 284T, 286T, 324T

Dimensional Data

Dimension A

N/A 31.000 in

Dimension B

N/A 25.250 in641.35 mm

Dimension C

N/A 14.250 in361.95 mm

Dimension D

N/A 15.500 in

Min. Dimension E

N/A 5.375 in136.53 mm

Max. Dimenson E

N/A 22.000 in558.80 mm

Min. Dimension F

N/A 2.875 in73.03 mm

Max. Dimension F

N/A 6.500 in165.10 mm

Dimension G

N/A 27.375 in695.33 mm

Slot (Dimension H)

N/A 0.625 in15.88 mm

Dimension I

N/A 4.250 in107.95 mm

Dimension J

N/A 3.750 in95.25 mm

Dimension K

N/A 6.250 in158.75 mm

Dimension L

N/A 0.750 in19.05 mm

Dimension M

N/A 6.000 in152.40 mm

Dimension N

N/A 0.625 in15.88 mm

Slot (Dimension O)

N/A 0.750 in19.05 mm

Dimension P

N/A 0.750 in19.05 mm

Dimension Q

N/A 3.625 in92.08 mm

Dimension R

N/A 1.563 in39.69 mm

Dimension S

N/A 3.375 in85.73 mm

Dimension T

N/A 7.125 in

Dimension U

N/A 2.188 in55.56 mm

Dimension W

N/A 15.000 in381.00 mm

Dimension X

N/A 23.000 in584.20 mm

Diameter (Dimension Y)

N/A 1.625 in

Diameter (Dimension Z)

N/A 1.000 in

Cubic inches

N/A 3423.56250 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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