TB Woods 11SCH178 Sure-Flex Plus Type SC hub for Size 11 elastomeric sleeve couplings with a 1-7/8" finished bore and keyway. High-strength cast-iron construction with setscrew locking. Rated for 5,890 in-lb continuous torque with EPDM or Neoprene sleeves and 18,000 in-lb with Hytrel sleeves at up to 3,600 RPM.

Bore size

1 7/8 in

Bore size (in)

1-7/8

Bore tolerance

+.0005 to +.0015

Capscrew size

Qty 4 -- 1/2 x 3-1/2

Capscrew size (in)

Qty 4 -- 1/2 x 3-1/2

Capscrew torque requirement

75 in-lbs

Capscrew torque requirment (ft lbs)

75

Component WR2 (lbs ft2)

0.3523

Component WR²

0.3523

Construction type

Finish bore with keyway

Coupling size

11

Dimension (in) (C)

2 23/32

Dimension (in) (H)

5 1/4

Dimension (in) (S)

1-5/8

Horsepower Rating at 100 RPM

9.4 HP with EPDM or Neoprene sleeve, 29 HP with Hytrel sleeve

Keyseat (in)

1/2 x 1/4

Keyseat size

1/2 in x 1/4 in

Length through bore

2.71875

Material type

High strength cast iron

Max angular gap misalignment

0.151 (in) with EPDM/Neoprene Sleeves and 0.037 (in) with Hytrel Sleeves

Max angular misalignment

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

Max compatible bore size

3.875

Max parallel misalignment

15

Max RPM

3600

Max speed

3600

Min compatible bore size

0.5

Power rating at 100 RPM

7.0 kW with EPDM or Neoprene sleeve, 21 kW with Hytrel sleeve

Screw size

Setscrew

Screw type

Hub, spacer

Set screw distance

1.625

Setscrew length

1.25

Setscrew length (in)

1 1/4

Setscrew size, location

1/2 13 UNC, over keyseat

Setscrew torque requirement

50

Setscrew Torque Requirment (ft lbs)

50

SF hub diameter

5.25

Torque

5,890 in-lb with EPDM or Neoprene sleeve, 18,000 in-lb with Hytrel sleeve

Torque rate

5,890 (in-lbs) with EPDM or Neoprene sleeve; 18,000 (in-lbs) with Hytrel sleeve