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 .003” & .004”.  MATERIAL HARDNESS IS VICKERS HARDNESS HV-380 TO HV-420.  WE PURCHASE OUR MATERIAL FROM JAPAN A  (OPTIONAL NICKEL, GOLD OR SILVER-PLATING, PHOSPHOR BRONZE MATERIALS 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 8 OZ TO 14OZ (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...................................................................0.010” TO 0.018” ± 0.0020”.

OVERTRAVEL......................................................................0.002” NOMINAL.

STORAGE TEMPERATURE.................................................-40°C  TO +70°C

OPERATION TEMPERATURE.............................................-40°C  TO +70°C

HUMIDITY.............................................................................0 TO 97% (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 NUMBER SYSTEM

10 -   SDL – 280    10mm DIA                 TRIP FORCE

                      SQUARE           ​           280GRAMS±30 GRAMS

​        ​                   CENTRE DIMPLE    LED