TB Woods 9SCH138 Sure-Flex Plus Type SC hub for Size 9 elastomeric sleeve couplings with a 1-3/8" finished bore and keyway. High-strength cast-iron construction with setscrew locking over the keyseat. Accepts EPDM, Neoprene, Hytrel, or Urethane sleeves; rated 2,340 in-lb torque with EPDM/Neoprene and 7,200 in-lb with Hytrel at 3,750 max RPM.

Bore size

1 3/8 in

Bore size (in)

1-3/8

Bore tolerance

+.0005 to +.0015

Capscrew size

Qty 4 -- 3/8 x 2 3/4

Capscrew size (in)

Qty 4 -- 3/8 x 2 3/4

Capscrew torque requirement

31 in-lbs

Capscrew torque requirment (ft lbs)

31

Component WR2 (lbs ft2)

0.0608

Component WR²

0.0608

Construction type

Finish bore with keyway

Coupling size

9

Dimension (in) (C)

1 31/32

Dimension (in) (H)

3 5/8

Dimension (in) (S)

1 1/4

Horsepower Rating at 100 RPM

57

Keyseat (in)

5/16 x 5/32

Keyseat size

5/16 in x 5/32 in

Length through bore

1.96875

Material type

High strength cast iron

Max angular gap misalignment

0.109 (in) with EPDM/Neoprene Sleeves and 0.028 (in) with Hytrel Sleeves

Max angular misalignment

1° with EPDM/neoprene sleeves and 1/4° with hytrel sleeves

Max compatible bore size

2.875

Max parallel misalignment

11

Max RPM

3750

Max speed

3750

Min compatible bore size

0.4375

Power rating at 100 RPM

2.8 kW with EPDM or Neoprene sleeve, 8.5 kW with Hytrel sleeve

Screw size

Setscrew

Screw type

Hub, spacer

Set screw distance

1.25

Setscrew length

1

Setscrew length (in)

1

Setscrew size, location

3/8 16 UNC, over keyseat

Setscrew torque requirement

23

Setscrew Torque Requirment (ft lbs)

23

SF hub diameter

3.625

Torque

2,340 in-lb with EPDM or Neoprene sleeve, 7,200 in-lb with Hytrel sleeve

Torque rate

2,340 (in-lbs) with EPDM or Neoprene sleeve; 7,200 (in-lbs) with Hytrel sleeve