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  • Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276).
  • The L Type coupling consists of two standard L Type hubs and one spider.
  • Unless stated otherwise, hub torque and horsepower ratings assume a SOX(NBR) rubber spider is being used.
Unit of Measure



N/A L050 HUB 9/16 1/8X1/16KW

Hub Style

N/A 1

Coupling Type

N/A Jaw


N/A Sintered Iron


N/A Metallic

# of Jaws

N/A 2

Elastomeric Member

N/A SOX (NBR) Rubber


N/A 0.10 lb

Weight (Complete Coupling w/ Max. Bores)

N/A 0.30 lb

Weight (Complete Coupling w/ Min. Bores)

N/A 0.20 lb

Dimensional Data

Bore Size 

N/A 9/16 in

Coupling Size

N/A L050

Keyway Size (W x D)

N/A 1/8 x 1/16 in

Length thru Bore

N/A 0.620 in15.75 mm

Overall Length

N/A 1.710 in43.43 mm

Outside Diameter

N/A 1.08 in27.43 mm

Min. Bore (Dimensions ID1/ID2)

N/A 0.250 in6 mm

Max. Bore (Dimensions ID1/ID2)

N/A 0.625 in16 mm

Hub Length

N/A 1.100 in27.94 mm

Dimension G

N/A 0.480 in12.19 mm

Dimension SL

N/A .31 in7.87 mm

Dimension T

N/A 1/4-20

Cubic inches

N/A 1.28304 in³

Performance Data

Nominal Torque

N/A 26.30 in·lb

Max. Speed

N/A 18000 rpm

Rated HP at 100 rpm

N/A 0.042 hp

Rated HP at 1,200 rpm

N/A 0.50 hp

Rated HP at 1,800 rpm

N/A 0.75 hp

Rated HP at 3,600 rpm

N/A 1.51 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.)



  • Fail-safe – will still perform if elastomer fails
  • No metal to metal contact
  • Resistant to oil, dirt, sand, moisture and grease
  • More than 850,000 combinations of bore sizes
  • Most types available from stock in 24 hours



  • Jaw coupling hubs are standard with one set screw, for two set screws see RRS & RRC sections.