MANUAL

RUSH BOOSTERHIROTAKA MFG. CO.,LTD.

The notes for Using

Be sure to read this before handling

CAUTION
1. Piping

Before installing the piping, blow compressed air to prevent dirt from entering the piping. Select and use
piping that can withstand the operating conditions. Release the air before use.

2. Air Supply

Using the compression air with dry via filter.

3. Hydraulic Fluid (ISO VG22 Standard mineral hydraulic fluid or VG32)

If the hydraulic fluid has drain or dirt mixed in with it, or if it has deteriorated or discolored, replace it withnew hydraulic fluid. Also, use the same old and new hydraulic oil. Recommended to replace once a year.

4. Quantity of hydraulic fluid

There is an oil level sticker on the side of the oil gauge, so replenish the hydraulic oil if the oil level drops.
Also, the hydraulic oil may turn black at the beginning of use, but this is due to initial wear of the seals.
There are no negative effects with continued use.

5. Mounting direction

The standard mounting direction is horizontal. Even if the Rush Booster is mounted facing downward orupward, mount the oil gauge with the red cap facing upward.

6. Return speed adjustment of Rush Booster

Adjust the return speed of the Rush Booster using the speed controller so that it is slower than the return
speed of the actuator operated by the Rush Booster. This is to prevent the oil pressure in the hydraulicpiping from becoming negative pressure and causing air bubbles to leak from the oil gauge or frominsufficient pressure. Normal operation after air bleeding is when the Rush Booster moves forward or
backward, and the oil level in the oil gauge repeats up and down movements of about 5 to 10 mm. If thereturn speed of the Rush Booster is fast and the pressure inside the hydraulic piping becomes negative,
the oil in the oil gauge will decrease to the extent that it temporarily disappears after the Rush Booster
returns, and then air bubbles will be generated and the oil may overflow from thered cap of the oil gauge.
In that case, release the air, replenish the oil, and adjust the return speed of the Rush Booster to a slower
value. When adjusting the return speed of the Rush Booster after air release, open the speed controller
little by little, and do not open it any further if there is no change in the return speed of the actuator.

7. Air release

When releasing the air, lower the air pressure to about 0.2MPa and operate the booster. Also, if there is an
air release plug on the actuator side, do not loosen the plug too much. There is a risk of oil gushing out or
the plug flying off. There is also a method to air release by supplying air into the oil gauge. (How to air
release refer P3)

Using oilStandard mineral hydraulic fluid (ISO VG22 or 32)

Operating pressurer

0.15MPa to 0.70MPa

Amount of needing oil

Amount of discharged oil + about 100cm3(Excludes oil amount in hydraulic piping and actuator.)
Example : RB160×100－65
Amount of discharged oil
In the case of RB160×100－65, amount of needing oil is 200cm3.
2

Before using
Oil gauge

Rush Booster

Before using the Rush Booster, attach the included oil
gauge to the connecting port (figure position). Aftercompleting the air piping and hydraulic piping, very
close the speed controller (P1 side) for adjusting thereturn speed of the Rush Booster to make the return
speed of the Rush Booster considerably slower.

P2 P1

How to add oil and air release

Red oil cap
PF3/8
Oil gauge
Hydraulicpiping
Air release plug

Return both the Rush Booster and actuator to return
position, remove the red cap from the oil gauge, andadd oil. If the actuator piping connection port is locatedbelow the Rush Booster as shown in the figure, andthere is a plug on the actuator side, loosen the plug. If it
do not have an air release plug, operate the RushBooster until the air is completely removed.
If the actuator piping connection port is located above
the Rush Booster, use the PF3/8 screw on the top of theoil gauge to supply low pressure air (0.02 to 0.05MPa)
into the oil gauge. Push the air in the hydraulic pipingwith low-pressure oil and loosen the air release plug on
the actuator side to release the air. When the oil in theoil gauge decreases, close the air elease plug, stop theair supply, and replenish the oil. Repeat this to releaseair, and finally add oil within oil level range. If the air isreleased correctly, the hydraulic pressure and actuator
stroke will be normal.

Hydraulic piping precautions

If air gets mixed into the oil in the hydraulic piping or actuator during use, it may prevent proper hydraulicpressure from being generated and the actuator from operating normally. install hydraulic piping with air
bleeding in mind.
Tee-joint
Air release plug

Inclination

Rush Booster is located above the actuator.

Rush Booster is located below the actuator.

Air release valve

Install an air release at a high positionin the middle of the piping.

There is an obstruction between the Rush Booster and actuator.
3Packing for RB series (Contact us for the RB300 series.)

Oil gauge⑦③ ⑦No.

1ModelWear ring④⑧⑨⑥ ②➀ ⑤⑥
2Pistonpacking

3O ring

4
Back upring

Direction

56789O ring

O ringY packingRod seal

Rod seal

RB100×□－ 5

SWB100

PSD100

G65－

P14

G95

RB100×□－12

SWB100

PSD100

G50－

P14

G95

P150

G90－

P28

1517#36

RB160×□－ 5⑧ ⑨RB160×□－16

SWB160P150

G75－

P141517#36RB160×□－28

SWB160P150

G55－P141517#36RB160×□－65

SWB160P150

G55

GN911001

P141517#36RB160×□－100－P150

P42GN910501

P121517#36Q’ty

111112

ISI45 55 6IDI
28 41 10ISI70 80 6IDI40 55 10IDI
30 45 10IDI
20 33 10IDI
16 26 81

PS45
PS28
ISI70,80,6PS40
PS30
PS20
PS161ISI45 55 6ISI
28 35.5 5
ISI
70 80 6ISI
40 50 6ISI
30 40 6ISI
20 28 5IDI
16 24 51

※How to order seal kit : "Seal kit for RB-○○ (part no.)" or "Seal kit for RB-○○ (model) ○○times".

Example for part numberRB 100 x □ - 12
Rush Booster

Pressure intensifying ratio

Bore size

Amount of discharged oil

HIROTAKA MFG. CO.,LTD.
HEAD OFFICE

5-89, Ikoma-cho, Kita-ku, Nagoya City, Aichi 462-0832, Japan
Phone +81-52-991-6111 Fax +81-52-991-6115

BRANCH OFFICE

207 Castle-Shinkoiwa, 1-56-14, Shinkoiwa, Katsushika-ku, Tokyo 124-0024, Japan
4 +81-3-3651-4231
Phone +81-3-3651-4230 Fax

http://www.hirotaka.co.jp/eng

2023a1