Notes on high-speed cutting Maximum permissible speed The limiting values shown in the tables should not be exceeded Otherwise the functionality

Notes on high-speed cutting Maximum permissible speed The limiting values shown in the tables should not be exceeded. Otherwise the functionality and / or reliability are not guaranteed. 2. Only use original Walter inserts and assembly parts (screws etc.). Recommendation After having changed the inserts at least five times, new screws should be fitted. 3. Adhere to the torques specified in the catalogue. 4. Balancing Balancing in two steps is required when milling in the upper speed range (> 6,000) a. Basic balancing of tool body including inserts (carried out by Walter upon request). The tool adaptor must also be balanced b. Fine balancing of the cutter when fully mounted on the adaptor. The fine balancing operation is strongly recommended as even the smallest eccentricity can seriously affect the balance status. 5. Short projection lengths reduce concentricity faults or an imbalance as well as increase spindle life. The specified speeds apply to the use of tools without additional extensions. 6. Safety guards Appropriate safety guards or machine encapsulations must be used to securely collect particles which spin off such as chips or cutting edges that are broken as a result of collisions. 7. Damaged tools The operating speed must be specified when arranging the repair of the HSC tool. Only Walter may carry out repairs on Walter tools for HSC machining operations. 8. Technical progress As research and standardisation on HSC machining operations is ongoing, we reserve the right to make technical changes. The discussion on balancing specifications is still in progress. The results of the “Balancing study group of the Technical University in Darmstadt show that the quality category G16 is usually sufficient. 1. Walter Boring tools B 3220 /B 3221 2. Walter Precision boring tools B 3230 3. Walter Precision boring tools B 4030 Diameter range Dc mm Diameter range Dc in nmax 1/min 20-24 0.787-0.945 16.000 26-33 1.024-1.299 12.000 33-41 1.299-1.614 10.000 41-55 1.614-2.165 7.800 55-70 2.165-2.756 5.800 70-90 2.756-3.543 4.600 90-110 3.543-4.331 3.700 110-153 4.331-6.024 2.900 150-220 5.906-8.661 2.100 220-290 8.661-11.417 1.450 290-360 11.417-14.173 1.100 360-430 14.173-16.929 900 430-500 16.929-19.685 750 500-570 19.985-22.441 650 570-640 22.441-25.197 550 The specified limiting speeds refer to symmetrically set tools (Z=2). For non-symmetrically set tools (Z=1), the values are reduced by 50 %. Diameter range Dc mm Diameter range Dc in nmax 1/min 2-45.5 0.080-1.791 6.000 20-26 0.787-1.024 12.000 26-33 1.024-1.299 10.000 33-41 1.299-1.614 8.100 41-55 1.614-2.165 6.450 55-70 2.165-2.756 4.850 70-90 2.756-3.543 3.835 90-110 3.543-4.331 3.090 110-153 4.331-6.024 2.390 150-220 5.906-8.661 1.440 220-290 8.661-11.417 1.090 290-360 11.417-14.173 880 360-430 14.173-16.929 740 430-500 16.929-19.685 630 500-570 19.685-22.441 550 570-640 22.441-25.197 490 The boring bar should be positioned as centrally as possible. Use the largest boring bar size possible. Diameter range Dc mm Diameter range Dc in nmax 1/min 2-10 0.079-0.394 14.000 10-20 0.394-0.787 12.000 20-45 0.787-1.772 8.000 33-41 1.299-1.614 15.000 41-55 1.614-2.165 11.500 55-70 2.165-2.756 9.000 70-90 2.756-3.543 7.000 90-110 3.543-4.331 5.500 110-153 4.331-6.024 4.000 4. Walter PrecisionDIGITAL boring tools B 4035 Diameter range Dc mm Diameter range Dc inch nmax 1/min 3-20 0.118 0.787 16.000 20-32 0.787 1.260 12.000 32-80 1.260 3.150 10.000 50-68 1.969 2.677 8.000 68-96 2.677 3.780 6.000 96-124 3.780 4.882 5.000 The boring bar should be positioned as centrally as possible. Use the largest boring bar size possible. C 223 Technical information Drilling WALTER Valenite