Page 367 - 4300 Catalog Cover.pdf

Parker Hannifin Corporation

Tube Fittings Division

Columbus, Ohio

http://www.parker.com/tfd

S17

4300 Catalog

Equipment

Dimensions and pressures for reference only, subject to change.

Table S4 — Mandrel Sizes

Fig. S34 — Mandrel

Fig. S35 — Mandrel Rods

Mandrels (Plug Type)

For use with Exactol Models 412, 424 and the HB632 benders.

Mandrels ensure smooth bends without kinking, or wrinkling

when bending thin-walled tube, or when making short-radius

bends. Mandrels support the tube wall from the inside to keep

it fully open for a smooth bend.

A rule that is generally followed to determine whether or not

a mandrel is necessary is as follows:When the wall thickness

of the tube to be bent is 7 percent or more of the tube O.D.,

a mandrel is usually not necessary. On wall thicknesses that

range between 4-6 percent of the tube O.D., it is necessary

to use a mandrel to avoid wrinkling and flattening in the bend

area. This rule is based on a bend radii of between three and

four times the tube O.D.

* See

Fig. S33

fo

r mandrel usage.

To order mandrel, specify tube O.D. and wall thickness.

Mandrel Rods

For use with the HB632 Model Bender and Exactol Models

412/424 benders. Mandrel rods (as well as a mandrel rod stop

assembly) are required when using mandrels. Mandrel rod

diameters are determined by tube I.D.

Mandrel Rod Sizes

Mandrel

Rod Dia.

Tube I.D.

(in.)

Part No.

1/4

.283 to .362 ......................................................

520506

5/16

.363 to .484 ......................................................

520507

13/32

.485 to 1.489 .....................................................

520508

5/8

1.49 to 1.87 ....................................................

520509

924417-Size X Wall Thickness =

924417-12X058

Part Number Example:

Benders

Size

END

SIZE

(in.)

Wall Thickness

(in.)

6

3/8

— 0.035 0.042 — —

8

1/2

— 0.035 0.042 0.049 —

10

5/8 0.035 0.042 0.049 — —

12

3/4 0.035 0.042 0.049 0.058 0.065

14

7/8 0.035 — 0.049 0.058 0.065

16

1 0.035 0.042 0.049 0.058 0.065

18 1 1/8 — 0.042 0.049 — 0.065

20 1 1/4 — 0.049 — 0.065 0.095

24 1 1/2 0.049 0.058 0.065 0.083 —