Summary
MAGNET_GENERAL_CATALOG_2019
VACUUM CHUCKSModel KVR VACUUM CHUCKELECTROMAGNETIC CHUCKPERMANENTPERMANENTCHUCKS CONTROLLERS MAGNETIC CHUCKS ELECTROMAGNETIC CHUCKSKVR-2D3060Vacuum system required additionally[Application]Chucks to hold workpieces by utilizing atmospheric pressure.Nonferrous and nonmagnetic materials can be held and machined.These chucks are suitable for grinding and cutting plastics andgrinding aluminum, brass, stainless steel, ceramic and glass.[Features]●The suction holes on the chuck work face can be arranged to setan effective holding area according to shapes of workpieces bycombined adjustment of thread valves and valves.●The suction holes have cross grooves to expand the actingarea. Thus, fewer thread valves are used to improve the workefficiency.●The chuck work face is made of iron to allow self-grinding torecover parallelism.●Since the chuck work face is made of iron, magnetic devicessuch as workpiece stoppers can be utilized.●A special suction hole layout adapter can be installed accordingto workpieces and work procedures.●These chucks can be mounted on magnetic chucks.●Since no heat source or moving parts are used inside thechucks, highly precise machining is ensured.BLOCKSFOR MCVACUUMCHUCKSAn example of fabrication of special typeKVR-H1530■KVR-D (Thread valve type)●An effective holding area can be set according to shapes ofworkpieces by combined adjustment of thread valves and valves.●Since suction grooves of cross shape are provided on the holdingface, the number of thread valves has been reduced to enhance thework efficiency.■KVR-H (Small hole type)●Holes ofφ4 are provided on the holding face at 8-mm pitches.PROMELTA*SYSTEMSINE BARCHUCKSBLOCKS, HOLDERS,MINI CHUCKSHOLDINGTOOLSB1B2Hh t(84)LeL125PBe PThe vacuum chuck is of such construction that the inside of thechuck is evacuated by a vacuum pump to reduce the internalpressure and a workpiece is held by atmospheric pressure.Therefore, the holding power is determined by a differencebetween the internal pressure and atmospheric pressure and theholding area. Due to physical restrictions, a difference in pressurethat can be obtained by a pump is about 80 kPa (600 mmHg) inconsideration of the upper limit of available evacuation efficiency.Since the same holding power as about 80 kPa (0.8 kgf/cm 2 ) canbe obtained, if the holding area of a workpiece is 100 cm 2 , it isheld by a holding power of about 800 N (80 kgf). Note, however,that if the holding face of workpieces is rough or distorted, even ifslightly, atmospheric pressure leak occurs to decrease the holdingpower significantly. For such workpieces, some leak preventingmeasures must be taken. Workpieces could be deformed by heatgenerated during machining depending on materials and thicknessof workpieces. Pay attention to machining methods. In particular,thin stainless steel sheets deform due to machining heat largelyand are difficult to hold. If you have questions, please contact us.MEASURING MAGNETICTOOL HOLDERS HOLDERSMAGNETICTOOLS43ModelNominal SizeWork FaceMounting Face HeightHole PitchB? L? t Be Le B? L? h HMassKVR-2D1018100(3.93)×175(6.89) 100(3.93) 175(6.89)85(3.34)145(5.70)96(3.78) 195(7.67)9kg/ 19 lbKVR-2D1325125(4.92)×250(9.84) 125(4.92) 250(9.84)105(4.13)225(8.85)121(4.76) 270(10.6)15kg/ 33 lbKVR-2D1515150(5.90)×150(5.90)150(5.90)125(4.92)170(6.69)11kg/ 24 lbKVR-2D1530 150(5.90)×300(11.8) 150(5.90) 300(11.8) P=2020 125(4.92) 245(9.64) 146(5.74) 320(12.6) 20 70 22kg/ 48 lb(Staggered layout)KVR-2D1545 150(5.90)×450(17.7) 450(17.7) (0.78)405(15.9) (0.78)(2.75)(0.78)470(18.5) 33kg/ 72 lbKVR-2D2035 200(7.87)×350(13.7) 350(13.7)200(7.87) 185(7.28) 305(12.0)370(14.5) 34kg/ 74 lb196(7.71)KVR-2D2050 200(7.87)×500(19.6) 500(19.6) 465(18.3) 520(20.4) 49kg/108 lbKVR-2D3060300(11.8)×600(23.6) 300(11.8) 600(23.6)285(11.2)545(21.4)296(11.6) 620(24.4)88kg/194 lb※Clamp parts are included.L2KVR-H1018KVR-H1325100(3.93)×175(6.89) 100(3.93) 175(6.89)125(4.92)×250(9.84) 125(4.92) 250(9.84)2072(2.83)92(3.62)125(4.92)205(8.07)P=896(3.78) 195(7.67)121(4.76) 270(10.6)20709kg/19 lb15kg/33 lbKVR-H1515 150(5.90)×150(5.90) 150(5.90) (0.78)(0.31)(0.78)(2.75)150(5.90) 125(4.92) 105(4.13)170(6.69) 11kg/24 lb146(5.74)KVR-H1530 150(5.90)×300(11.8) 300(11.8) 252(9.92) 320(12.6) 22kg/48 lb※Clamp parts are included.[mm(in)]ApplicableVacuum SystemVPU-E10VPU-E20VPU-D20VPU-E20VPU-D20VPU-E10VPU-E20VPU-D20
