Chromalox Big Red Book

COMPONENTS

TubularHeaters Factory Bending Guidelines (cont’d.)

TUBULAR

Figure 5

Figure 7

Figure 6

L 1

R 1

R 3

Dia.

Dia.

R 2

R 1

R 4

B 1

Dia.

R 1

H

R 2

R 2

R 2 B 2

B 1

A

A

B

R 1

A

H

C

R 4

R 3

R 3

I

R 1

B 2

C

C

B

R 1

H

L 2

L 1

X = No. Outside Hairpins

I

R 1

L 1

L 2

L 3

L 2

OAL = 2H + 0.86R 3 - 0.86R 4 - 6.15Dia. + 2I + 2L 1 + 2.28R 1 + 1.14R 2

OAL = 2L 2 + 2H + 2I + 2L 3 (X-1) - 0.86R 3 - 0.86R 4 - 4.86Dia. + 1.14R 1 (X) + 1.14R 2 (X-1) - (2X-1)0.43Dia.

OAL = 2H + 0.86R 3 - 3.72Dia. + 2L 1 + 2L 2 + 2.28R 1 + 1.14R 2

Figure 10

Figure 8

Figure 9

R 1

A

Dia.

A

R

L

Dia.

E

J

L 2

R

A

< .

B 2

D

R 2

B

B 1

B

L 1

OAL = 2L 1 + 2.28R 2 - 1.29Dia. + 2L 2 + 1.14R 1

OAL = 2L + 3.42R - 1.29Dia. + 2E

OAL = 0.0175(< . )(2D/2 + Dia.) + 1.14R + 0.43Dia.

Figure 11

Figure 12

Figure 13

Dia.

H

K

Dia.

C

D

J

L

C

A

D

R

D

C

R

Dia.

A

OAL = [(D + Dia.)(3.14)(Number of 360°’s)] + 2C

OAL = (D + Dia.)3.14 + 1.14R + 2C + 3.71Dia. - A

OAL = (D + Dia.)3.14 + 1.14R + 2H + 3.28Dia. - A

Figure 14

Figure 15

Figure 16

K

A

L 1

J

C

R 2

I

R 2

R 1

C

L 1

H

L 2

C A

View A

View B

B 1

B 1

Dia.

Dia.

B 2

Dia.

R 1

H

D

D

Dia.

L 2 B 2

A

A

OAL = 2H + 2L 2 + 2L 1 - A - 1.72R 1 - 0.86R 2 - 6.29Dia.

OAL = [(D + Dia.)(3.14)(No. 360°’s)] + (D/2) + K + C

OAL = 2L 2 + 2H - A - 2.28R 1 - 0.86R 2 - 3.29Dia.

A-9

A-9