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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 305-8


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 53.25 lb

UPC Number

N/A 19809

NEMA Frame Motor Size

N/A 184T, 213T, 215T

Dimensional Data

Dimension A

N/A 27.875 in

Dimension B

N/A 23.625 in600.08 mm

Dimension C

N/A 11.875 in301.63 mm

Dimension D

N/A 14.000 in

Min. Dimension E

N/A 4.000 in101.60 mm

Max. Dimenson E

N/A 20.000 in508.00 mm

Min. Dimension F

N/A 2.625 in66.68 mm

Max. Dimension F

N/A 5.438 in138.11 mm

Dimension G

N/A 25.250 in641.35 mm

Slot (Dimension H)

N/A 0.563 in14.29 mm

Dimension I

N/A 4.250 in107.95 mm

Dimension J

N/A 2.875 in73.03 mm

Dimension K

N/A 5.000 in127.00 mm

Dimension L

N/A 0.500 in12.70 mm

Dimension M

N/A 6.000 in152.40 mm

Dimension N

N/A 1.063 in26.99 mm

Slot (Dimension O)

N/A 0.500 in12.70 mm

Dimension P

N/A 0.750 in19.05 mm

Dimension Q

N/A 2.625 in66.68 mm

Dimension R

N/A 1.438 in36.51 mm

Dimension S

N/A 2.750 in69.85 mm

Dimension T

N/A 7.125 in

Dimension U

N/A 3.000 in76.20 mm

Dimension W

N/A 12.500 in317.50 mm

Dimension X

N/A 19.250 in488.95 mm

Diameter (Dimension Y)

N/A 1.250 in

Diameter (Dimension Z)

N/A 0.750 in

Cubic inches

N/A 2780.53125 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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