Dental handpiece bearings, also called dental drill bearings, are precision miniature ball bearing and can withstand high speed rotation.
Our models can match with different worlds dental handpiece brand, like BIEN AIR, KAVO, MIDWEST, SIRONA, NSK, SIEMENS, STAR, W&H etc.
- basic model: SR144. S means stainless steel.
- inner ring and outer ring material: stainless steel 440(9Cr18)
- balls material: stainless steel and ceramic Si3N4(widely use)
- balls structure: radial balls(with letter “R”, Timken—DR)
angular contact balls(with letter “A”, Timken—DA) - cage material: TL-TORLON(polyamide-imide)
Ti(textile laminated fiber reinforced phenolic) - bearing speed: 400000rpm
- bearing tolerance: ABEC-7(P4)
- bearing structure: smooth, flanged, groove(stepped)
- ball numbers: standard is 7pcs balls, sometimes are 8pcs balls.
- K1: angular contact bearing with stepped inner ring;
K2: angular contact bearing counter bored outer ring
There are some models with suffix “letters”, like SFR144K1TLKZWNW02Z1, you can know the means in the following form.
| S | stainless steel | Z | single shields |
|---|---|---|---|
| F | flanged | W | width of inner ring and outer ring is 2.78mm |
| K1 | inner ring with groove, separable | N | ceramic ball |
| TL | Torlon cage | Wo2 | outer ring width is 2.38 mm; inner ring width is 2.78 mm. |
| K | outer ring with groove, separable | Z1 | one single integral shield |
BIEN AIR
SR2-5TLZW and SR2-5TLZWN:
3.175*7.938*3.5712mm, smooth bearing structure, radial balls, 7pcs balls.
Timken:DR09B, DR09C, DR09D, DR09F.
Barden: SR2-5STAY36
Application: BLACK PEARL FRCTION GRIP, BLACK PEARL PB, BORA PB, LAB FRICTION GRIP.
SR144TLZW and SR144TLZWN:
3.175*6.35*2.78mm, smooth bearing structure, radial balls, 7pcs balls.
Timken: DR55A, DR55B, DR55F
Barden: SR144STAY64
Application: ONDINE FRICTION GRIP, ONDINE PB, PRESTIGE PB.
SR133TLZZ:
2.38*4.76*2.38mm, smooth bearing structure, radial balls, 7pcs balls.
Timken: DR05E
Application: CA1:4/1:5 INTERMEDIA SHAFT, PMAM 10:1/1:2/1:1 BUR GUARD.
DABI ATLANTE
SR144TLKZ and SR144TLKZN:
3.175*6.35*2.38mm, groove(stepped) bearing structure, radial balls, 7pcs balls.
Timken: DR21B, DR21A, DR21H
Barden: SR144STAY39
Application: MS350 PUSH BOTTON
PALISADE
SFR144TLZW and SFR144TLZWN
3.175*6.35*2.78*7.5(flange)mm, flanged bearing structure, radial ball,7pcs balls.
Timken: DR01B, DR01E
Barden: SFR144SSTAY186
Application: IMPACT AIR 45 FRONT
SFR144TLW and SFR144TLWN
3.175*6.35*2.78*7.5(flange)mm, flanged bearing structure, radial ball,7pcs balls.
Timken: DR01A
Application: IMPACT AIR 45 REAR
KAVO
SR144K1TLZW02 and SR144K1TLZW02N
3.175*6.35*2.38*2.78(extended inner ring)mm, groove(stepped) bearing design, angular contact ball.
Timken: DA21J
Application: 635B PB REAR, 637B PB REAR, 659B PB FRONT, 6000B PB FRONT
SR144K1TLKZW and SR144K1TLKZWN
3.175*6.35*2.78mm, groove(stepped) bearing structure, angular contact ball, 7pcs balls.
Timken: DA70B
Barden: SR144HSY161
Application: 625/630/640 PB, 625D FG, 625CD PB, 632B/642B/645B PB, 632/642 FG, 634P4 Companion PB, 635B PB FRONT, 636/636C FG, 636P/636CP/646B PB, 637B PB FRONT, 647B/649B PB, 650B PB REAR, 655B PB.
SR144K1TLW02 and SR144K1TLW02N
3.175*6.35*2.38*2.78(extended inner ring)mm, smooth bearing design, angular contact ball, 7pcs balls.
Timken: DA02J
Application: 659B PB REAR, 6000B PB REAR, 6500B PB REAR, 7000B PB, 8000B GentleSilence REAR.
SR144TLKZW and SR144TLKZWN
3.175*6.35*2.78mm, groove(stepped) bearing structure, radial ball, 7pcs balls.
Timken: DR07B
Barden: SR144STAY85
Application: 625/630640 PB, 625D FG, 625CD PB, 632B/642B/645B PB, 632/642 FG, 634F4 Companion FG, 636/636C FG
CASTELLINE
SFR144TLZW and SFR144TLZWN
3.175*6.35*2.78*7.5(flange)mm, flanged bearing design, radial ball, 7pcs balls.
Timken: DR01B/DR01E
Barden: SFR144SSTAY186
Application: CLEAN AIR 2000
YOSHIDA
SFR144TLZW and SFR144TLZWN
3.175*6.35*2.78*7.5(flange)mm, flanged bearing design, radial ball, 7pcs balls.
Timken: DR01B/DR01E
Barden: SFR144SSTAY186
Application: 535B, 540, 640.
LARES
SR144TLW1.9 and SR144TLW1.9N
3.175*6.35*1.91mm, smooth bearing design, radial ball, 7pcs balls.
Timken: DR74A
Application: 557 PUSH BUTTON REAR, 757 WORKHORSE PUSH BUTTON REAR, 757 TRI-PORT PUSH BUTTON REAR.
SR144TLZ and SR144TLZN
3.175*6.35*2.38mm, smooth bearing design, radial ball, 7pcs balls.
Timken: DR02B, DR73B
Barden: SR144STAY134
Application: 330E&557 MANUAL CHUCK, 557 PUSH BUTTON FRONT, 757 WORKHORSE PUSHU BUTTON FRONT, 757 TRI-PORT PUSH BUTTON FRONT
MIDWEST
SR144K1TL and SR144K1TLN
3.175*6.35*2.38mm, smooth bearing design, angular contact ball, 7pcs balls.
Timken: DA02A
Application: QUIET-AIR LEVER REAR, 300E/TRADITION MANUAL REAR, TRADITION LEVER FRONT.
SFR144K1TLZW and SFR144K1TLZWN
3.175*6.35*2.78*7/5(flange)mm, flanged bearing design, angular contact ball, 7pcs balls.
Timken: DA01B
Application: QUIET-AIR LEVER FRONT, XGT/TRADITION PB, 300E/TRADITION MANUAL FRONT, TRADITION LEVER FRONT.
SR144TL and SR144TLN
3.175*6.35*2.38mm, smooth bearing design, radial ball, 7pcs balls.
Timken: DR02A
Application: QUIET-AIR LEVER REAR, 300E/TRADITION MANUAL REAR, TRADITION LEVER FRONT.
SFR144TLZW and SFR144TLZWN
3.175*6.35*2.78*7.5(flange)mm, flanged bearing design, radial ball, 7pcs balls.
Timken: DR01B, DR01E
Barden: SFR144SSTAY186
Application: QUIET-AIR LEVER FRONT, XGT/TRADITION PB, 300E/TRADITION MANUAL FRONT, TRADITION LEVER FRONT.
MORITA
SR144K1TLN
3.175*6.35*2.38mm, smooth bearing design, angular contact ball, 7pcs balls.
Timken: DA02A
Application: TWIN POWER STANDARD HEAD PUSH BUTTON, TWIN POWER MINI HEAD PUSH BUTTON.
SIRONA
SR144K1TLKZW02 and SR144K1TLKZW02N
3.175*6.35*2.38*2.78(extended inner ring)mm, groove(stepped) bearing design, angular contact ball.
Timken: DA21J
Application: T1 MINI PB
SR144K1TLZ1W and SR144K1TLZ1WN
3.175*6.35*2.78mm, smooth bearing design, angular contact ball, 7pcs balls.
Timken: DA55Z
Application: T3 MINI FIXED CONNECTION PB REAR, T3 RACER FIXED CONNECTION PB REAR, T2/T3 MINI PB, T2/T3 RACER PB, T2 CONTROL PB.
NSK
SR144TL and SR144TLN
3.175*6.35*2.38mm, smooth bearing design, radial ball, 7pcs balls.
Timken: DR02A
Application: MACH-N75M/MACH LITE-NL85M/A200L MINI PB, MACH-N755/MACH LITE-NL855/A300L STANDARD PB, MACH-N75T/MACH LITE-NL85T/A400L, PHATELUS II-MU/NL-65M/CH QD-M PB, PHATELUS II-SU/NL-655/CH QD-S/NL-455/A450L PB, PHATELUS II-TU/NL-65T/CH QD-T/NL-45T/A450T PB, PANA AIR SIGMA, TI-MAX A600/A600L/N-955/NL-955 PB, PANA 2000 S PB, SUPER GRADE, PUSH SWIVEL/VIP/VIP II PB.
SFR144TLZW and SFR144TLZWN
3.175*6.35*2.78*7.5(flange)mm, flanged bearing design, radial ball, 7pcs balls.
Timken: DR01B, DR01E
Barden: SFR144SSTAY186
Application: PHATELUS I/ALPHA-LITE MINI SINGLE SPRAY PB, PHATELUS I/ALPHA-LITE SINGLE SPRAY STANDARD PB.
SR144K1Z1TL and SR144K1Z1TLN
3.175*6.35*2.38mm, smooth bearing design, angular contact ball, 7pcs balls.
Timken: DA02Z
Application: X600L/X600KL/NL9000S PB FRONT, X700L/X700KL/NL9000T PB FRONT.
SR144K1TLW02 and SR144K1TLW02N
3.175*6.35*2.38*2.78(extended inner ring)mm, smooth bearing design, angular contact ball.
Timken: DA02J
Application: X600L/X600KL/NL9000S PB REAR, X700L/X700KL/NL9000T PB REAR.
STAR
SR2-5TLZW
3.175*7.938*3.5712mm, smooth bearing design, radial ball, 7pcs balls.
Timken: DR09B, DR09C, DR09D, DR09F
Barden: SR2-5STAY36
Application: FUTURA MANUAL CHUCK, ULTRA MANUAL CHUCK.
SFR144K1TLKZW and SFR144K1TLKZWN
3.175*6.35*2.78*7.5(flange)mm, flanged bearing design, angular contact ball, 7pcs balls.
Timken: DA54B
Application: 430/VISTA MANUAL CHUCK, 430/VISTA PB DAILY LUBE.
SIEMENS
SR144TLKZ and SR144TLKZN
3.175*6.35*2.38mm, groove(stepped) bearing design, radial ball, 7pcs balls.
Timken: DR21A, DR21B, DR21H
Barden: SR144STAY39
Application: TM1
SR144K1TLKZW and SR144K1TLKZWN
3.175*6.35*2.78mm, groove(stepped) bearing design, angular contact ball, 7pcs balls.
Timken: DA70B
Barden: SR144HSY161
Application: TS1
W&H
SR144TLZ and SR144TLZN
3.175*6.35*2.38mm, smooth bearing design, radial ball, 7pcs balls.
Timken: DR02B, DR73B
Barden: SR144STAY134
Application: 200/300/600 SERIES MINI HEAD FRICTION GRIP, 200/300/600 SERIES MINI HEAD PB, 200/300/600 SERIES STANDARD HEAD FRICTION GRIP, TOPAIR 200/300/600 SERIES STANDARD HEAD PB.
SR144TLZW and SR144TLZWN
3.175*6.38*2.78mm, smooth bearing design, radial ball, 7pcs balls.
Timken: DR55B, DR55F
Barden: SR144STAY64
Application: TOPAIR/TOPLIGHT 100/700/800 SERIES MINI HEAD FRICTION GRIP, TOPAIR/TOPLIGHT 100/700/800 SERIES MINI HEAD PB, TOPAIR/TOPLIGHT 100/700/800 SERIES STANDARD HEAD FRICTION GRIP, TOPAIR/TOPLIGHT 100/700/800 SERIES STANDARD HEAD PD, ALEGRA TE-95 PB, ALEGRA TE-96 PB.
SR144K1TLZW and SR144K1TLZWN
3.175*6.35*2.78mm, smooth bearing design, angular contact ball, 7pcs balls.
Timken: DA55B
Barden:SR144HSX27
Application: TOPAIR/TOPLIGHT 100/700/800 SERIES MINI HEAD FRICTION GRIP, TOPAIR/TOPLIGHT 100/700/800 SERIES MINI HEAD PB, TOPAIR/TOPLIGHT 100/700/800 SERIES STANDARD HEAD FRICTION GRIP, TOPAIR/TOPLIGHT 100/700/800 SERIES STANDARD HEAD PD.
SR144K1TLZ1W and SR144K1TLZ1WN
3.175*6.35*2.78mm, smooth bearing design, angular contact ball, 7pcs balls.
Timken: DA55Z
Application: SYNEA TA-96 PB, SYNEA TA-97C LED PB, SYNEA TA-98 PB, SYNEA TA-98 LED PB.