Parker EXACTOL 400 Series - Radius Blocks

Bulletin 4391-B400S
EXACTOL
®
400 Series Tube Benders
3
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
www.parker.com/tfd
Radius Die Blocks
Radius Die Blocks
Radius die blocks can be furnished from stock in 34
sizes for standard bends ranging from 9/16" to 5" radii,
as given in the chart below. There are six small radius
die blocks, eleven large radius die blocks, three sizes of
close bend radius blocks, and fourteen metric sizes of
radius blocks (shown in chart below).
Three Hole Blocks — To use the larger three hole radius
blocks, just install a third pin in the drive plate, if necessary,
then remove the slide block vise adapter by removing the
two Allen-headed screws in back of plate to provide space
for the larger radius blocks.
Close Bend Radius Blocks — The close bend radius
blocks have a threaded pin which threads directly into both
Triple-Lok and Ferulok tube fitting nuts. With the use of
Parker’s Seal-Lok close bend adapter, one can also use
Seal-Lok fittings with a close bend radius block. They permit
an operator to make his first bend very close to the end of
the tube.
Each radius die block has a graduated marking at inter-
vals of 15° to indicate the degree of bend. Each radius
die block also has an integral clamp arrangement for
easy, quick, positive clamping of the tube, except for
the close bend radius blocks. Radius bocks are marked
with the tube size and radius for identification.
Radius Block Charts
Size
Tube O.D.
Small
Radius Block
Large
Radius Block
Radius Block Close
Bend
(in.)
(mm)
Part
No.
Radius*
Part
No.
Radius*
Part
No.
Radius*
(in.) (mm) (in.) (mm) (in.) (mm)
4 1/4 6.4
550573
9/16 14.3
550579
3/4 18.5 — — —
5 5/16 7.9
550574
11/16 17.5
550580
1 25.4 — — —
6 3/8 9.5
550575
15/16 23.8
550581
1-1/4 31.8 — — —
8 1/2 12.7
550576
1-1/4 31.8
550582
2 50.8
590535
1-1/4 31.8
10 5/8 15.9
550577
1-1/2 37.5
550583
2-1/2 63.5
590535
1-1/2 38.1
12 3/4 19.0
550578
1-3/4 43.8
550584
3 76.2
590537
1-3/4 44.5
14 7/8 22.2
—
— —
621046
3-1/2 88.9 — — —
16 1 25.4
—
— —
621047
4 101.6 — — —
18 1-1/8 28.6
—
— —
621048
4-1/2 114.3 — — —
20 1-1/4 31.8
—
— —
621049
5 127.0 — — —
24 1-1/2 38.0
—
— —
870149
5 127.0 — — —
*Radius to tube centerline.
Tube
O.D.
(mm)
Bend
Radius
(mm)
Part
No.
6 14
820090-6mm
8 18
820090-8mm
10 24
820090-10mm
12 32
820090-12mm
14 38
820090-14mm
15 38
820090-15mm
16 38
820090-16mm
18 44
820090-18mm
20 44
820090-20mm
22 89
820090-22mm
25 102
820090-25mm
28 102
820090-28mm
30 127
820090-30mm
38 127
870149