HYDRAULIC CYLINDERS
[EIRI/EDPR/1294] J.C. 9956
INTRODUCTION
Introduction to Hydraulic Cylinders
Hydraulic cylinders are often also referred to as hydraulic rams, hydraulic jacks, hydraulic pistons or hydraulic actuators. These different terms are generally synonymous, although a ram is usually a cylinder with a very large piston rod diameter and a jack normally refers to a short stroke single acting hydraulic cylinder.
Types of Hydraulic Cylinders
Hydraulic cylinders may be classified into two groups, double acting and single acting cylinders.
Single Acting Hydraulic Cylinders
A single acting hydraulic cylinder employs hydraulic force in only one direction, usually to extend the cylinder. The single acting cylinder is returned to its start position by an external force such as gravity or a spring. Of course, this can only be done after the hydraulic fluid within the cylinder has been depressurized and is allowed to return to the oil reservoir.
Double Acting Cylinders
A double acting hydraulic cylinder employs hydraulic force in two directions, both extension and retraction. This requires valving between the pump and the cylinder to direct the flow of oil alternately between the two sides of the piston. A double acting cylinder is more complex in design than a single acting cylinder as it has two oil supply ports and additional seals to retain the pressurized fluid within the cylinder and to prevent it from leaking past the piston rod.
COST ESTIMATION
Plant Capacity 17 Nos/Day
Land & Building Rented
Plant & Machinery Rs. 44.99 Lac
Working Capital for 2 Months Rs. 34.87 Lac
Total Capital Investment Rs. 85.87 Lac
Rate of Return 31%
Break Even Point 67%
CONTENTS
INTRODUCTION
USES AND APPLICATIONS
B.I.S. SPECIFICATIONS
MARKET POSITION
MARKET OVERVIEW
SPECIFICATION OF HYDRAULIC CYLINDERS
SEAMLESS TUBE SPECIFICATION
PROCESS FLOWSHEET DIAGRAM FOR BARREL
PROCESS FLOW CHART FOR PISTION
PROCESS FLOW CHART FOR PISTON ROD
PROCESS FLOW CHART FOR GUID BUSH
MANUFACTURING PROCESS
FRICTION WELDING TECHNIQUES FOR HYDRAULIC CYLINDERS
CHROME PLATING
PLANT LAY OUT
SUPPLIERS LIST FOR HYDRAULIC CYLENDER
APPENDIX – A:
01. PLANT ECONOMICS
02. LAND & BUILDING
03. PLANT AND MACHINERY
04. OTHER FIXED ASSESTS
05. FIXED CAPITAL
06. RAW MATERIAL
07. SALARY AND WAGES
08. UTILITIES AND OVERHEADS
09. TOTAL WORKING CAPITAL
10. TOTAL CAPITAL INVESTMENT
11. COST OF PRODUCTION
12. TURN OVER/ANNUM
13. BREAK EVEN POINT
14. RESOURCES FOR FINANCE
15. INSTALMENT PAYABLE IN 5 YEARS
16. DEPRECIATION CHART FOR 5 YEARS
17. PROFIT ANALYSIS FOR 5 YEARS
18. PROJECTED BALANCE SHEET FOR (5 YEARS)
