Firestone EMDG198 manual Table of Contents, Introduction

TABLE OF CONTENTS

Table of Contents and Introduction	2
Advantages of Airstroke Actuators	3
Advantages of Airmount Isolators	4
Air Spring Bellows Construction	5
End Closure Options
Crimped bead plates	6
Crimped bead plates mounting hardware	7
Steel bead rings	8
Aluminum bead rings	9
The four types of bead rings and
mounting hardware	10
Rolled plates	11
How to use the Static Data Chart
For Airstroke Actuation	12&13
For Airmount Isolation	13
Internal Rubber Bumpers	13

Basic Parameters Applicable to Both Airstroke Actuators and Airmount Isolators

Media	14
Pressure	14
Temperature	14
Contaminants	14
Storage	14
Airstroke Actuation
Selection	15
Down and Up Stops	15
Return	15
Guiding	15
Angular Capability	15
Horizontal Misalignment	16
Design Envelope	16
Stacking	16
Fail-Safe Devices	16
Vacuum	16
Inflation Pressure Chart	17
Airstroke Actuator Problem Solvers	18,19 & 20

Airmount Vibration Isolation
Selection Procedure and Isolation Formula	.......21-22
Dynamic Spring Rate Formula	22
Natural Frequency Formula	22
Center of Gravity	23
Lateral Rates and Stability	23
Triple Convoluted and Reversible
Sleeve Type Parts	24
Design Envelope	24
Safety Stops	24
Initial Installation	24
Startup and Shutdown/Resonance
and Amplification	24
Isolating an Unbalanced Mass	24
Low Pressure Operation	24
Effect of an Auxiliary Reservoir	24
Damping	25
Plumbing Systems	25
Isolation Chart	26
Airmount Isolation Problem Solvers	27-28
Miscellaneous Applications
Shock Impact Isolation	29
Protective Boot and Flexible Connector	29
Vacuum Pump	29
Inflatable Chuck	29
Cam Follower	29
Miscellaneous Problem Solvers	30-31
Airstroke/Airmount Selection Guide	32-33
Individual Air Spring Data Pages	34-98
Index & Work Sheets
Order Number to Style Number
to Page Number	100-101
Airstroke Design Parameter Worksheet	103
Airmount Design Parameter Worksheet	105
Style Number to Page Number	107

INTRODUCTION

Firestone developed the air spring in the late 1930’s as a more efficient spring (vibration isolator) for use in vehicle suspensions. Airide® springs, as they were named, provid- ed the means for a suspension to reduce the amount of road shock and vibration transmitted into the vehicle. Millions of miles of actual use have proven the dependabili- ty and effectiveness of the air suspension concept using Airide® springs by Firestone.

Airstroke® actuators, Airmount® isolators, and Airide® springs are Firestone registered trademark names for one product: the air spring. The use of the air spring (actuator, industrial isolator and vehicular isolator, respectively) deter- mines which name is applied to it. All of the parts in this catalogue may be used as Airstroke actuators (except the 1X84D-1 and 2M1A) or Airmount isolators, with two excep- tions: Triple convoluted and reversible sleeve type air springs (except the 1M1A-0) should not be used as Airmount isolators without consulting Firestone.

Individual Airstroke actuators and Airmount isolators are capable of generating a force or supporting a load of up to 100,000 pounds, and a stroke capability of up to 14 inches is possible. Included in this engineering manual are detailed operating characteristics for many of the standard Firestone air springs, along with technical details and pro- cedures for using these products.

PLEASE NOTE:

The information contained in this publication is intended to provide a gen- eral guide to the characteristics and applications of these products. The material, herein, was developed through engineering design and develop- ment, testing and actual applications and is believed to be reliable and accurate. Firestone, however, makes no warranty, express or implied, of this information. Anyone making use of this material does so at his own risk and assumes all liability resulting from such use. It is suggested that competent professional assistance be employed for specific applications.

2 Copyright ©1998 Firestone Industrial Products Company