Radial bearing as followings:SR144TL (for NSK HANDPIECES,) SR144TLKZ (for dabi atlantes handpieces),SR144TLZW (for w&h 700&800series),SR144TLKZW (kavo handpieces 625/630/632/635/640/642/635B) Other dental bearing as followings:SR144TLZ, SR144TLZ1, SR144K1TLZ, SR144K2TLZ, SFR144K1TLZ, SFR144K2TLZ2, SR144K1TLKZ, SR144K2TLKZ, SR144TLW1 9, SFFR144TLW, SFFR144TLZ1W etc. 45 types in all.1.S-Rings and balls are made in 9Cr18Mo stainless steel(AISI440C)2.F-With capped edge.3.R144-Basic bearing code(inch)4.K1-Angular contact bearing with stepped inner ring, K2 - Angular contact bearing with counter bored outer ring, 5. Material of cageTl-(polyimide, black)Ti-TextoliteTa-(polyimide, yellow)6. K -outer rings with stageG-outer ring with recess7. Z -with single shield8. W -width of both inner and outer ring are 2.78mm.9. N- ball material is si3n4.Absende of symbol- ball material is 9cr18mo10. Absende of symbol -7 balls are taken, 8 balls are taken.How to use correctly:1. It is the best that the interference fit between bearing bore and turbine shaft is under 0.5um-1.5um.when putting turbine shaft into bearing bore, the pressure should be forced on the face of inner ring to avoid the damage of rollway and balls.2. After fitting the bearing into turbine shaft they should be instilled special lubricant (ethanol must not be used)3. After high stean sterilized the dental high speed handpiece should be jetted somelubricant into the air inlet before used and so that bearing could be used longer time. 4. To keep operating stability, the preload spring stress of bearing should be controlled under 1.2 +/- 0.2N. Packing:1pc/boxsingle packing producing area:China payment:T/T supplying capacity:80,000pcs/month