TB Woods 11C212 Sure-Flex Plus Type C flange with 2-1/2" finished bore for Size 11 elastomeric sleeve couplings. High-strength cast-iron construction with setscrew clamping. Compatible with EPDM, Neoprene, Hytrel, and Urethane sleeves; rated up to 5,890 in-lb continuous torque with EPDM/Neoprene and 18,000 in-lb with Hytrel.

Bore size

2 1/2 in

Bore size (in)

2-1/2

Bore tolerance

+.0005 to +.0020

Bore tolerance (in)

+0.0005 to +0.0020

Capscrew size

4

Capscrew size (in)

1/2 20 NF X 2

Capscrew torque requirement

16

Capscrew torque requirment (ft lbs)

130

Component WR2 (lbs ft2)

1.2099

Component WR²

1.2099

Construction type

Finish bore with keyway

Coupling size

11

Dimension (in) (C)

4

Dimension (in) (D)

8.625

Dimension (in) (H)

5.375

Dimension (in) (S)

5/8

Dimension (in.) (E)

2.5

Flange diameter

8.625

Horsepower Rating at 100 RPM

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

Keyseat (in)

5/8 x 5/16

Keyseat size

5/8 in x 5/16 in

Length through bore

4

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

Outside diameter

8.625

Power rating at 100 RPM

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

Screw size

Setscrew

Screw type

Flange, Clamp

Set screw distance

0.625

Setscrew length

1

Setscrew length (in)

1

Setscrew size, location

5/16 18 UNC, over keyseat

Setscrew torque requirement

13

Setscrew Torque Requirment (ft lbs)

13

SF flange length

1.5

SF hub diameter

5.375

SF hub length

43

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