WHAT IS AN OILLESS BEARING?
A bearing that can improve productivity and save cost/time by having the material properties which can withstand both high & low temperature, corrosive environment, foreign particles, and impact load. There are various kinds of shapes and materials for oil less bearings such as metal, plastic and ceramic.
Sintered layer including solid lubricant and oil impregnated pores & Backing steel.■ FEATURES
- Uniformly spread solid lubricant is available to be used for any motion.
- Highly operational even to fine and minute movement.
- Available to use without lubrication.
- Excellent for high load and speed with good abrasion-resistance.
- Standard product can be purchased immediately, and material for additional processing is also available.
- Stock materials may be processed and then must be impregnated in the lubricant before use.
- If it is used for the first time or has not been used for a long time, lubrication is necessary before using.
■ WEAR AMOUNT TEST
1. Contact pressure: 250kgf/cm2
2. Velocity: 9m/min
3. Test Time: 250h
4. Mating Material: JIS S45C + HRC 50
Advantage & Disadvantage of Oilless Bearing
Dry lubrication (using solid lubricant) |
Liquid lubrication (using oil or water) |
|
Advantage |
o Available to being used in high & low temperature o Available to being used in corrosive environment o High load and low speed condition where oiling is useless, liner |
o Light or medium load and high speed o Liquid lubrication prevent friction between metal to metal by |
Disadvantage |
o Not supposed to be used inhigh speed when it is using in soilless condition o Using it in high speed condition may occur seizure or shorten life cycle of bearing because solid lubricant has higher friction coefficient |
o Regular oiling is required o Cannot be used in high & low emperature o Cannot be used in corrosive environment o Not proper to be used in high & load speed as oil film is hard to be formed, imp active load, angular pitching motion, discontinuous motion o Not proper to be used in high load & high speed (shorten life cycle of bearing because of heavy PV value) |
Base metal and its use
CODE |
SP |
HP |
BP |
AL |
B |
F |
SUS |
S |
BASE METAL |
High |
Special high strength Brass casting |
Brass |
Aluminum |
Bronze |
Cast Iron |
Stainless |
Steel |
USE |
General |
Higher |
General |
General |
General |
High |
Chemical |
High |
High |
Low load |
seawater |
High |
High |
Shock |
|||
underwater |
underwater |
Solid Lubricant type
USE |
CODE |
USE |
CODE |
High pressure, sea water |
SL5 |
High temperature |
SL1 |
Underwater, Eco-friendly |
SL7 |
General |
SL2 |
Underwater |
SL4 |
DEVELON BEARING
Develon is steel-backed sintered metal bearing with excellent wear-resistance for heavy load and low/mid velocity under harsh environment of shock and vibration.
■ MECHANICAL AND PHYSICAL PROPERTIES
SGO #500
■ MECHANICAL AND PHYSICAL PROPERTIES
Manufacturing Process - SGO#500
■ Full production line from raw material to finished parts.
1. Raw Material
2. Melting
3. Checking for Compositon and Hardness while Melting
4. Continuous Casting Billet & Cutting
5. Prepare Extruding
6. Extruding & Storing Material
7. Cutting & Drilling
8. Inserting Plugs & Machining
9. Impregnating & Inspecting
10. Packing & Storing
Main Application
- Plastic Injection Molding Machines
- Power Plants
- Molds
- Construction Machinery
- Hydraulic Press Machine
- Steel Production Facilities
High Temperature Conditions
Steel mills
Furnace drag outs
Drying equipment’s
Roasters
Heat exchangers
- Automobile Manufacturing
Press dies
Welding assembly lines
Painting & drying lines
Chain conveyers
Machine tools
- water Resisting
Dam gates
Submersible pumps
Hydro – electric structures
Offshore structures
Dock and dredge equipment
- Vessels
Deck cranes
Winches
Hatch covers
Rudder arms
Derrick & hoisting equipment
- Anti – chemical
Chemical plants
Plating equipment
Waste water treat equip
Drying machines
Oil & chemical refinery equipment
- Heavy Industries
Steel tube plant machinery
Tire & paper mills
Power generating station
Toggle link bearings for injection mold machinery
- Bridge & Elevated Rail
Bridge bearing
Plate girder , truss , suspension
Nuclear related reactor supports
Steam generator supports