• The AL Type coupling consists of two standard AL Type hubs and one spider (find under L Type components, or the AL section for AL150).
  • Unless stated otherwise, hub torque and horsepower ratings assume a SOX(NBR) rubber spider is being used.
Unit of Measure



N/A AL070 HUB 5/8 3/16X3/32KW

Hub Style

N/A 1

Coupling Type

N/A Jaw


N/A Aluminum


N/A Silver

# of Jaws

N/A 2

Elastomeric Member

N/A SOX (NBR) Rubber


N/A 0.08 lb

Weight - Solid

N/A 0.20 lb

Weight (Complete Coupling w/ Max. Bores)

N/A 0.30 lb

Dimensional Data

Bore Size 

N/A 5/8 in

Coupling Size

N/A AL070

Thread (Dimension T)

N/A 1/4-20

Keyway Size (W x D)

N/A 3/16 x 3/32 in

Length thru Bore

N/A 0.750 in19.05 mm

Overall Length

N/A 2.000 in50.80 mm

Min. Bore (Dimensions ID1/ID2)

N/A 0.250 in6 mm

Max. Bore (Dimensions ID1/ID2)

N/A 0.750 in19.00 mm

Hub Length

N/A 1.250 in31.75 mm

Dimension G

N/A 0.5 in12.7 mm

Dimension HD

N/A 1.36 in34.54 mm

Dimension SL

N/A 0.380 in9.65 mm

Cubic inches

N/A 2.31200 in³

Performance Data

Nominal Torque

N/A 43.20 in·lb

Max. Speed

N/A 14000.00 rpm

Moment of Inertia (Solid) WR2

N/A 0.040 lb·in²

Rated HP at 100 rpm

N/A 0.07 hp

Rated HP at 1,200 rpm

N/A 0.84 hp

Rated HP at 1,800 rpm

N/A 1.23 hp

Rated HP at 3,600 rpm

N/A 2.52 hp

Spider Performance

Spider Performance

  • Nitrile Butadiene (Buna N) Rubber is a flexible elastomer material that is oil resistant, resembles natural rubber in resilience and elasticity and operates effectively in temperature range of -40° to 212° F (-40° to 100° C). Good resistance to oil. Standard elastomer. (Also applies to SXB Cushions.)



  • Interchangeable with all hub sizes standard for the L-Line and AL-Line products
  • Available in a variety of different finished bore and keyway combinations
  • Finished bores passivated for additional rust protection



  • Lovejoy does not recommend reboring AL hubs.
  • All hubs are supplied standard with one set screw, except the AL150 which is provided with two set screws.