METAL  DOMES  SPECIFICATION

MATERIAL

OUR DOME ARE MADE FROM TYPE 304 STAINLESS STEEL (ANSI 304, OR SUS 304).  WE SELECTED THIS MATERIAL BECAUSE OF ITS LOW CARBON CONTENT (0.08%) WHICH OFFERS THE BEST OXIDATION RESISTANCE.  MATERIAL THICKNESS IS FROM 0.06mm TO 0.12mm.  MATERIAL HARDNESS IS VICKERS HARDNESS HV-380 TO HV-420.  WE PURCHASE OUR MATERIAL FROM JAPAN AND EUROPE.  (OPTIONAL GOLD OR NICKEL PLATED AND DOUBLE SIDE NICKEL PLATED AVAILABLE).

 

TOOLINGS

WE HAVE SEVERAL DIFFERENT TOOLS FOR EACH DOME SIZE.  WE CAN OFFER A WIDE RANGE OF ACTUATION FORCE (TACTILE PRESSURE) FOR OUR DOMES.  WITH FOUR DIFFERENT TOOLS WE CAN COMPENSATE FOR THE MATERIAL THICKNESS AND HARDNESS VARIATIONS AND  BETTER MEET YOUR ACTUATION FORCE REQUIREMENTS.  OUR STANDARD RANGE OF ACTUATION FORCE IS (FROM: 220 GRAM TO 400GRAM).  UPON REQUEST WE CAN SUPPLY DOMES WITH ACTUATION FORCES OURSIDE OF OUR STANDARD RANGE.  CUSTOM DOME DESIGNS ARE ALSO AVAILABLE.  WE MAINTAIN OUR OWN IN-HOUSE TOOL & DIE SHOP.

 

MECHANICAL SPECIFICATIONS

LIFE EXPECTANCY............................................................1,000,000  TIMES.

TOTAL TRAVEL...................................................................0.24mm TO 0.8mm.

OVERTRAVEL......................................................................0.05mm TO 0.15mm.

STORAGE TEMPERATURE.................................................0°C  TO +70°C

OPERATION TEMPERATURE............................................0°C  TO +70°C

HUMIDITY.............................................................................0 TO 70% (NO CONDENSATION).

 

LIFE EXPECTANCY OF OUR METAL DOMES (DOMES ONLY, USING A RUBBER TIP) EXCEEDS 1,000,000 ACTUATIONS.  YOU MAY GET DIFFERENT RESULT IN YOUR LIFE TESTING DEPENDING ON:

• THE TYPE & CONDITION OF THE SURFACE THE DOME IS MOUNTED TO.

• THE DESIGN OF THE TIP THAT CONTACTS THE DOME.

• THE AMOUNT OF BURR ON THE DOME.

• THE AMOUNT OF FORCE & OVERTRAVEL YOU APPLY ON THE DOME.

Part no. & Material availablity

 

METAL DOMES

 

 

 

 

 

PART NUMBER SYSTEM

 

 

 

 

，

12.2- SDL - 280

 

 

12.2mm DIA 280 GRAMS30 GRAMS

 

 

STAR TRIP FORCE

 

 

CENTRE DIMPLE LEG

 

 

 

 

 

 

 

 

MATERIAL USED: STAINLESS STEEL (SS)

 

 

STAINLESS STEEL WITH ONE-SIDED GOLD PLATED (Au/SS)

 

 

NICKEL PLATED WITH ONE-SIDED GOLD PLATED (Au/NI)

 

 

BOTH SIDES NICKEL PLATD (NI/NI)

 

 

STAINLESS STEEL WITH ONE-SIDED NICKEL-PLATED (Ni/SS)