SAE 100R4 HYDRAULIC SUCTION AND DISCHARGE HOSE

It depends on the bore, from 21 bar at 3/4 inch down through 17, 14, 10.5 and 7 bar, and then 4 bar on the 2-1/2, 3 and 4 inch codes. Burst is three times working on every row, from 63 bar down to 12 bar.

R4 where the line has to be emptied as well as filled, R6 for a plain return. R4 is a wire-reinforced body rated 21 bar at 3/4 inch up to 4 inch at 4 bar, while R6 stops at 19 mm and stays at 20 bar.

Not on a high-pressure line. The best code here is 21 bar with 63 bar burst, and above 2-1/2 inch the rating is only 4 bar. A working line at 200 bar needs a four-spiral or braided body instead.

Eight codes from 19 to 102 mm inside diameter, which is 3/4 inch to 4 inch, with minimum bend radius 100, 150, 190, 220, 300, 380, 450 and 550 mm in the same order.

Because above 2-1/2 inch the bore is chosen for volume, not for pressure. The 2-1/2, 3 and 4 inch codes are all 4 bar working with 12 bar burst, on outside diameters of 81.6, 94.4 and 120.2 mm.

Because it is a suction and discharge class rather than a working pressure class. The table publishes 63 bar burst on 21 bar working at the small end and 12 on 4 at the large, and the ratio is the same on every row.

The 25 or 32 mm code at 17 or 14 bar on a 150 or 190 mm arc. A discharge line is sized for the volume moved and for how fast it has to empty, and the 3:1 margin covers the surge.

The 76 mm code at 4 bar with 12 bar burst, on a 450 mm arc at 3.85 kg/m. Above 2-1/2 inch all three large codes share that rating, so the bore is the only choice left.

100 metres per size, cut to length, with a maximum single length of 61 metres on all eight codes, which is 200 ft in the length column. Production runs about 20 days from confirmation.

Price follows the bore: 0.95 kg/m at 3/4 inch, 1.16 at 1 inch, 1.85 at 1-1/2, 2.36 at 2 inch and 5.21 kg/m at 4 inch. Send bore, length, ends and destination for a firm figure the same working day.