Pictures and Introduction I. GENERAL DESCRIPTION This is a bi-function polishing machine – ultrasonic vibration polishing function and EDM EROSION function. During ultrasonic polishing, the vibration movement repeats at maximum 28,000 times per second. During EDM erosion, the machine discharges high frequency electric spark to remove excessive material at adjustable speed. YJ-5B works much faster than manual polishing; it can polish deep and narrow areas where manual polishing cannot reach. Its EDM erosion function offers an economical and fast approach to polish extra-hard alloy or carbide. Previous models, customer dissatisfaction concerns: (I) the hand piece is big and clumsy. (II) high level of abrading sound. To satisfy the customer need, we produce a new model – light and handy YJ-5B. It also operates at a lower sound level. By using sectional assembly, the machine size of YJ-5B decreases noticeably and the machine quality improves significantly. YJ-5B has also modified the hand piece overheating problem found in YJ-5. FEATURES 1. Ultrasonic vibration tracking system 2. Nine step numerical EDM power control 3. Nine step numerical vibrating power control. 4. Able to adjust the EDM gap automatically to obtain maximum output. 5. Fine EDM process, suitable for intricate mould. 6. Controlled power output and stored current consume little power. 7. The hand piece is light and handy, reduce fatigue and promote efficiency. 8. Machine occupies a small work place. II. SPECIFICATIONS 1. Application: ribs, slits, tapered holes of dies, different shaped holes and other areas that are hard to polish or finish by hand 2. Applicable Material: steel, carbide, glass, precious stones 3. EDM Fluid: kerosene or water 4. Input: single phase 110V & 220V ~10% 50/60Hz 5. Output: 60W, 19-28 KHz, 9-stage output selection 6. Dimensions: 230 by 130 by 78mm3 7. Weight: Approx. 3Kg We have both 110V and 220V in stock. III. EFFECT OF YJCS-5B POLISHING 1. Appearance: after polishing, the surface should be flatly lapped; all EDM, wire-cut or milling marks should be removed. 2. Roughness: After EDM Erosion Stage 1, the surface roughness should be below Ra0.3. After complete ultrasonic finishing, the surface roughness should be around Ra0.012 (mirror finish). 3. Ultrasonic Finishing Speed: Tip Type Roughness Approx. Speed Ceramic stone tip Ra2.5-Ra0.5 1cm2/min Brass rod tip Ra0.1-Ra0.2 2cm2/min Hard wood tip Ra0.3-Ra0.05 1cm2/min Soft wood tip Ra0.05-Ra0.012 1cm2/min The speed may differ due to operator familiarity and working area complexity. 4. EDM Erosion Speed: 2mm3/min. Payment We accept PayPal. Please contact us if you may need some other payment method. We will only ship item to your PayPal address if no special request from you. Please leave note in PayPal when making the payment if you have any special request. Delivery details *Please note we can not ship to PO BOX. Because Express shipping request your signature. *All items will be shipped from its warehouse within 1 business days after receiving payment . *Domestic transit from warehouse to international shipping center may need 1-3 business days. *United States: 7-10 business days via ePacket delivery for small package OR 5-10 business days via EMS/DHL/UPS/China post for big package. *Other Countries: 12-30 business days via economy air post for small package OR 5-10 business days via EMS/DHL/UPS/China post for big package. *It may delay due to the following reasons: 1- strict customs 2-bad weather (rain, flood, snow) 3-To meet customer's special requirements to customize the item( eg. voltage,plug etc.) 4-Holidays 5-some other unexpected reasons. Please don't place your order if no delay can be accepted,because international shipping service is beyond seller's control . Please note most of our items are very heavy, if it is damaged in transit; we can ship replacements to you; or you ship it back to us and we ship a new one to you OR you can buy insurance for your item or shipping fee.No negative feedback can be accepted because it is beyond seller's control. We do have checked the item and packed well before shipping it to you. Please note that the item does NOT include any custom duty fee or taxes, if it is requested by your local custom,it will be buyer's responsibility. We can declare lower value as you requested. qfollow Warranty Terms Warranty Terms * All items come with 1 year warranty;some special items may have up to 3 years of warranty. * Warranty time starts with the day when we received your POSITIVE feedback. (You have up to 2 weeks to test your item before leaving positive feedback) *Any delay on leaving Positive feedback may postpone the processing speed when you need after sale service because we may need more time to find your record on this item.And the warranty time will be counted from the day when buyer receive this item. * If we receive your POSITIVE feedback within 3 days your warranty time will be added for another 1 year for free. * Any Negative or Neutral feedback without asking us for help will be taken as giving up all after sale service -No warranty. Because you did not give us chance to achieve your satisfaction so we can do nothing for you. *We offer all details about how to maintain this item. In case you followed proper steps but it still doesn't work properly,please describe your problem or send picture/ video to us and we will give you solutions. *All of our item can be fixed easily; for most of the time customers do not to ship it back. *basically you can solve it by yourself using our solutions. If it turns out that problems were caused by broken parts which is not caused by improper use. We ship new parts to you for free for the first three months with picture of directions. Our parts will be free for all the first year, but after three month, shipping cost has to be added. After the first year, mail to us if you have problems or mail back parts, then we’ll proof it for free but shipping cost is charged. We’ll choose cost-effective shipping method for you. Please don't worry about how to fix it. It’s no need or really in slim chance. Thank you! *If you can not work with us when problem arises, please don't place order, because if you refuse to describe your problem with words or photo, we don't know how to help you. Communication Warranty Terms * Please check your message box after placing your order because we may contact you for your order. If you can not reply to us promptly your order may be delayed. *Please contact us via eBay Message and we will try to reply to you asap. *if you have NOT received item after 30 days, we will check it with post office, and then resend or refund any missing items. *If you receive a wrong item please contact us asap for a resend or refund. *If you received a damaged item please contact us for replacements or solutions. *Open a case without contacting us is not necessary because for most of cases,eBay's rule is buyer pay the cost of shipping back item to seller to get full refund, but we can do better than eBay requested;But if you open a case we will go as eBay requested us to do. Return Policy Warranty Terms * Warranty time starts with the day when we received Feedback *We appreciate your POSITIVE feedback which can encourage us to continuously provide high quality service to you. *Our item all come with warranty; your positive feedback can help us to expand business;So help us is to help yourself to get continued warranty service. *Your communication can get even better result than eBay requests the seller to do. *We will terminate any communication or warranty or after sale service when buyer leaves negative feedback because we can not get worse result than the feedback you left for us. Return Policy Warranty Terms * Warranty time starts with the day when we received Return Policy *If you don't like this item, you can return the item within 14 days- Please note buyer pays the ROUND shipping cost and 10% of restoring fee. *It is seller's responsibility to fix it if item can not work very well;but it is buyer's responsibility to work together with seller.Please refer to warranty policy.
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