{"product_id":"badeco-222-heavy-spring-hammer-handpiece-duplex-spring-134751","title":"Badeco Swiss Hammer Handpiece-222 Heavy Spring Strength-with Duplex Spring","description":"\u003cp\u003eThe \u003cstrong\u003eBadeco 222 Heavy Spring Strength Hammer Handpiece with USA Duplex Spring\u003c\/strong\u003e (Part #134.751) is a world-renowned Swiss-made reciprocating hammer handpiece trusted by professional stonesetters and jewelers worldwide. This is the USA version of the Badeco 222, configured with the American-made duplex spring attachment for added flexibility in tight or angled working positions.\u003c\/p\u003e\u003cp\u003eGenuine Swiss-made Badeco hammer handpieces are recognized globally as the highest-quality reciprocating hammer handpieces available. Jewelers prize them for their easily adjustable stroke, controllable power, and exceptional service life. The Model 222 heavy spring strength is the most popular spring strength sold worldwide and is the preferred choice among professional stonesetters.\u003c\/p\u003e\u003cp\u003eThis handpiece ships with a Badeco 134.753 (Badeco 240.000) non-hardened tip, which is designed to be shaped and hardened by the user according to their specific setting needs.\u003c\/p\u003e\u003ch3\u003eTip Preparation Instructions\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e the tip as desired before hardening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 1 – Hardening:\u003c\/strong\u003e Hold the tip at the threaded part with tweezers (do not damage the thread). Heat the front part with a blowlamp to 820°C (light cherry-red). Cool rapidly by placing the tip head-down into an oil bath.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 2 – Remove Oil:\u003c\/strong\u003e Whiten with fine sandpaper. Do not touch the point with bare fingers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 3 – Tempering:\u003c\/strong\u003e Pass the piece from back to front over a blowlamp to 130°C (the color must not change). Cool immediately in an oil bath. If temperature is too high, the tip will lose its edge quickly — repeat from Step 1.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eA wide variety of pre-shaped and hardened tips are available separately.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine Swiss-made Badeco quality — recognized as the world's best hammer handpiece\u003c\/li\u003e\n\u003cli\u003eHeavy (Model 222) spring strength — the most popular spring strength globally\u003c\/li\u003e\n\u003cli\u003eIncludes USA-made duplex spring attachment for added working flexibility\u003c\/li\u003e\n\u003cli\u003eEasily adjustable stroke for precise control\u003c\/li\u003e\n\u003cli\u003eLong service life with controllable reciprocating power\u003c\/li\u003e\n\u003cli\u003eIncludes Badeco 134.753 non-hardened tip, ready for user shaping and hardening\u003c\/li\u003e\n\u003cli\u003eOne year Badeco factory warranty on the handpiece (duplex spring excluded)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e134.751\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eBadeco 222\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpring Strength\u003c\/th\u003e\n\u003ctd\u003eHeavy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpring Type\u003c\/th\u003e\n\u003ctd\u003eUSA Duplex Spring (attached post-factory)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded Tip\u003c\/th\u003e\n\u003ctd\u003eBadeco 134.753 \/ 240.000 (non-hardened, user-shaped)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eSwiss-made handpiece; USA-made duplex spring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003eOne year factory warranty on handpiece; duplex spring has no warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOtto Frei recommends pairing this duplex spring model with a \u003cstrong\u003eLow Speed High Torque Foredom LX motor (item 134.159)\u003c\/strong\u003e to extend duplex spring life. The foot pedal controls speed, not power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not exceed a 45-degree angle\u003c\/strong\u003e when using the duplex spring. Operating beyond this angle or during detachment from the flex shaft can easily damage the spring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not operate above 5,000 RPM.\u003c\/strong\u003e Duplex springs can be damaged at higher speeds and may also fail during normal use.\u003c\/li\u003e\n\u003cli\u003eThe duplex spring is not made by Badeco and carries no factory warranty. All parts related to the USA duplex spring connection are also excluded from warranty.\u003c\/li\u003e\n\u003cli\u003eConsider purchasing additional inner duplex springs (single: Part #134.279 Foredom HP76; pack of 12: Part #134.280 Foredom HP76B) and learning to replace the inner duplex spring, the most commonly failing component.\u003c\/li\u003e\n\u003cli\u003eHandpieces dismantled by the user during the warranty period will be repaired at the user's expense. Damage from improper use or failure to follow Badeco instructions is not covered under warranty.\u003c\/li\u003e\n\u003cli\u003eOtto Frei offers in-house repair services for Badeco hammer handpieces.\u003c\/li\u003e\n\u003cli\u003eAn owner's instruction sheet is included with every Badeco hammer handpiece — read carefully before use.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Badeco","offers":[{"title":"Default Title","offer_id":43583129780438,"sku":"134.751","price":382.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/badeco-swiss-hammer-handpiece-222-heavy-spring-strength-with-duplex-spring-otto-frei.jpg?v=1719956743","url":"https:\/\/www.ottofrei.com\/products\/badeco-222-heavy-spring-hammer-handpiece-duplex-spring-134751","provider":"Otto Frei","version":"1.0","type":"link"}