BI-Coupler

Industrial Products | Hydraulic Hose

For Safety's sake

Be sure to read the following before use.

These Bridgestone products are developed for hydraulic components.
Follow each product's application and specification.
Avoid burst, leakage and other dangers by following these important steps.

1 Proper usage

Warning

Do not touch a pressurized coupler or swivel joint.: If a product is broken, and a fluid touches the skin, even if no pain is felt, a serious injury including burns may be caused. Obtain medical assistance immediately. Failure to do so can result in the loss of the injured body part or death. Use of plastic hose guards will increase the possibility to protect a person from injury.
Do not apply an electrical current to a hose assembly.: Electrifying may lead to a product failure or electric shock.
System working pressure should not exceed the rated working pressure.: Exceeding the rated working pressure of hose and coupler may result in the hose bursting or hose coupling-blow off.
Follow the maximum working pressure ratings listed in this catalog.
Use compatible hydraulic fluid.: The use of an incompatible hydraulic fluid will deteriorate the inner tube and or the reinforcement resulting in the hose bursting or hose coupling blow-off.
Do not remove BI coupler under pressurized conditions.

Caution

Avoid the usage exceeding applicable temperature: The usage exceeding applicable temperature may cause leakage and hose coupling blow-off.
Avoid excessive vibration: Excessive vibration may cause leakage and hose coupling blow-off by fatigue.
Avoid vacuum pressure: Excessive vacuum pressure may result in the inner tube damage which will lead to hose failure.
Never repair or rework.
Avoid submerging hose assemblies in water or any other liquid.
Do not take remaining pressure by hitting head portion of poppet of BI coupler
Do not use body or nose of BI coupler as stop valve.

2 Installation

Caution

Follow the below tightening torque. Improper tightening may lead to deterioration of seal performance, oil leakage, and failure of connection portion which may result in injury or material damage.

1 In case of steel or stainless

Size	04	06	08	12	16	20	24	32
Size	1/4"	3/8"	1/2"	3/4"	1"	1 1/4"	1 1/2"	2"
Tightening Torque N•m	25	34	64	132	196	225	255	412

2 In case of brass or copper

Size	04	06	08	12	16	20	24	32
Size	1/4"	3/8"	1/2"	3/4"	1"	1 1/4"	1 1/2"	2"
Tightening Torque N•m	15	25	29	59	88	118	137	206

Please connect a hose at a right angle to the fixed side like (B).
Avoid the piping like (A) which may apply too much force on the rotating part.

As for installation of swivel joint, fix the shaft side and rotate the housing side.

Do not connect a swivel joint with another swivel joint.

3 Warranty Period

Warranty period is impulse cycle number or each specified period, whichever comes earlier.

4 Preventive Maintenance

Before every usage, check any leakage from the products. If found, replace with a new one.

5 Storage

Store in a dark and dry place at the temperature between -10℃ to +40℃(14°F to 104°F)

For safety's safe, list the above warnings in your catalog in order to avoid miss-use of products by end users.

Danger: This symbol indicates failure to comply with the indications will cause personal death or injury

Warning: This symbol indicates failure to comply with the indications may cause personal death or injury.

Caution: This symbol indicates failure to comply with the indications may cause injury or physical damage.

Features

Minimize possible fluid leakage and aeration

Structure

BI coupler is composed of nose, body, collar, and valve frame. When the collar is slided to axial direction, the steel ball can be free and the body and nose can be inserted. After the insertion, if collar is moved back, the steel ball is on the line of the nose and BI coupler is locked. In this condition, each poppet is pushed and the circuit is open.For disconnection, when the collar is moved on axal direction, the steel ball is free again and the body and the nose is easily disconnected.At the time, the poppet adheres to seat surface and the circuit is closed.

Selection of proper coupler

Please check below points.

Fluid to be used
Flow rate and velocity
Fluid temperature
Maximum working pressure ( Relief valve pressure )
Vibration
Installation way ( screw, spanner, etc )
Ambient temperature

Series	Max.Working Pressure	Size
For Standard Pressure EA For Hydraulic Oil	Steel 20.5MPa Stainless 04•06→17.0MPa 08→14.0MPa 12•16→7.5MPa 20•24→3.5Mpa 32→1.5Mpa	02~32 (1/8")~(2")
For Standard Pressure ED For Hydraulic Oil		04~32 (1/4")~(2")
For Standard Pressure AA For Hydraulic Oil	27.5MPa	04~16 (1/4")~(1")
For Standard Pressure MA For Hydraulic Oil	34.5MPa	08•12•16 (1/2") (3/4") (1")
With Function to Release Residual Pressure EP For Hydraulic Oil	20.5MPa	06•08 (3/8") (1/2")
Flat-Face for Die-Casting ENF For Hydraulic Oil	20.5MPa	04~16 (1/4")~(1")
Dust-Proof / Corrosion Resistance AA / VKF Mineral / Phosphericacid Oil Ester Oil	27.5MPa	04~16 (1/4")~(1")
Brassware DA Hydraulic Oil / Water	04(1/4")~08(1/2") 7.0MPa 12(3/4")~16(1") 3.5MPa	04~16 (1/4")~(1")
For Jack Application JCA Hydraulic Oil	30JC06C-XXZ 68.5MPa (For jack application)	04•06•08 (1/4") (3/8") (1/2")
For Water Jet Application JA Water	30JA04B-SKFZ 147.0MPa 30JA04G4M4-SKFZ 245.0MPa	04 (1/4")
For Steam / Water SD Steam / Water	2.0MPa	12•16 (3/4") (1")
For Pressure Detection BF Hydraulic Oil	27.5Mpa	02•04 (1/8") (1/4")