Fire

Basic Info.

Model NO.	2B7405
Spring Material	Rubber
Structure	Double Cylinder
Car Make	Guomat or Neutral
Brand	Guomat or Neutral
Damping Force Direction	Bidirectional
Fuction	Reduce Shock
Key	Fire-Stone W01-358-7405
Cetification	ISO/Ts16949:2009
Quality	100 % Tested
Transport Package	Strong Cartons
Specification	Rubber
Trademark	GUOMAT
Origin	Guangzhou, China
HS Code	8708809000
Production Capacity	1000PCS/Week

Product Description

Fire-stone Pneumatic Air Suspension W01-358-7405 Replacement Double Convoluted Spring

OEM NO.

Fire-stone	W01-358-7405
Fire-stone	WO13587405
Fire-stone	WO1-358-7405
Fire-stone	W013587405
FIRE-STONE	W01-358-7405
FIRE-STONE	WO13587405
FIRE-STONE	WO1-358-7405
FIRE-STONE	W013587405
Goodyear	2B12-313
Goodyear	2B12 313
Goodyear	2B12313
Goodyear	2B12-459
Goodyear	2B12 459
Goodyear	2B12459
Goodyear	578 9 23 309
Goodyear	578923309
Contitech	FD330-22 364
Contitech	FD330 22 364
Contitech	FD 330-22 364
Contitech	FD 330 22 364
Triangle	6316
Triangle	4364
Arvin Meritor	200981
Daylon	3547405
Leland	Sc2073
Hutchens	H-10384-01
SAF Holland	57007405
Suspensions lnc.

Specifications and Detailed Technical Parameters:AIRSUSTECH 2B7405

• Nut/blind nut

Top plate screw (nut) teeth: 1/2-13UNC; 3/4-16UNCThe screw center distance of the top cover plate: 140mmScrew (nut) teeth of the bottom cover plate: 2X1/2-13UNCThe screw center distance of the bottom cover plate: 157 mm

• Air hole/air inlet/air fittings

Air hole/air inlet: 1/4-18NPTF

The screw center distance between the air hole and the nut: 140mm

Air Inlet Combine With One Nut

• Cover plate

Top plate diameter: 231 mm

Diameter of the bottom cover: 231mm

• Rubber Bellows

Rubber Bellows MAX Diameter : 325 mm / 12.9 inches

Compressed Height: 81 mm / 4.12 inches

Minimum Jounce Height: 81mm / 4.12 inches

Maximum Height: 305 mm / 12 inches

Working Stroke : 224 mm / 8.8 inches

• Bumper block/bumper block

Without bumper block

• Belt loop/Belt loop

With belt loop: One belt loop

Min. pressure: 0 bar

Return force to min.height: ≤300N

Overall weight with clamped plates: 5.1kg

Vibration isloation-dynamic characteristic valuesDesign height H: recommended 220mm, minimum 205mm

Pressure p [bar]	3	4	5	6	7	8	Vol. V [l]
Force (Load) [KN]	10.0	13.3	16.7	20.6	24.1	27.6	12.0
Spring rate [N/cm]	1590	1900	2210	2520	2830	3140
Natural frequency [Hz]	2.0	1.9	1.8	1.8	1.7	1.7

Pneumatic application-static characteristic values

Force F[KN]

Pressure p [bar]		3	4	5	6	7	8	Vol. V [l]
Height H[mm]	300	9.8	13.1	16.7	20.3	24.0	27.7	14.0
	260	12.5	16.7	21.0	25.4	29.9	34.5	13.0
	220	14.6	19.4	24.4	29.4	34.5	39.6	11.6
	180	16.2	21.6	27.0	32.5	38.2	43.8	9.9
	140	17.6	23.4	29.3	35.2	41.3	47.2	7.8
	100	18.3	24.4	30.3	36.3	42.4	48.5	5.5

The related picture of 2B7405

The difference between air spring and ordinary spring

1.Stronger elasticity

Compared with ordinary springs, air springs have stronger elastic force and can meet the use of some large equipment. Although the elasticity of ordinary springs is not weak, it may be difficult if used in some large equipment, and ordinary springs need to take up a lot of space, so they are not used in some high-tech products.

2. With shockproof function

We all know that ordinary springs have no shock-proof function, which is the main reason why ordinary springs are easily damaged. Because it is used in large equipment, the spring has to work many times a day. Without the shockproof function, the spring will be worn out every time it works, so it will be damaged quickly.

3. Work performance will not be degraded due to usage time

After a period of use of ordinary springs, the working performance will gradually decrease, because after many times of work, the elasticity of ordinary springs will become worse and worse due to aging. However, the air spring is different, and the working performance will not be reduced due to the increase in the use time or the number of uses. According to the test data of some professional institutions, this kind of spring will not have any problems after 2 years of use.

Company Profile
Guangzhou Guomat air spring Co., Ltd. is a domestic innovative enterprise dedicated to the research and production of automotive air springs. It is located in the beautiful flower city of Guangzhou. With modern workshops and advanced rubber air spring manufacturing equipment, it is one of the current air spring production bases in China. Our products are mainly used in the bases of commercial vehicles, passenger cars, and industrial machinery and equipment. The main products are: rubber air springs, passenger car and truck airbags, industrial airbags, air springs for papermaking machinery, large washing machines, rubber air springs for cars, etc. There are thousands of models and styles, and can also be customized according to customer requirements. Or the customer's existing product specifications to design and produce.
Factory workshop

FAQ
Q1:Can you produce the product according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.Q2: What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.Q3: What certification does your product pass?
A: Our products are certified to ISO/TS16949:2009 international quality standards. Please rest assure that we have very strict Quality Control Systems.Q4 : Can I use my own logo?
A:Sure. We can do as per the customer's requirements.