NC DRILL CHUCK “Solid”means Compact, Precision, Rigidity and Safety.
P. 45
Such troubles will not only hinder an unmanned oper-ation in FMS but cause successive occurrence of detective products to obstruct the rationalization of factory.
Slipping off of drill liable to occur at the time of sudden stop.
Such disengagement from Jacob's taper being inevitable.
Breakage immediately before drilling through due to slipping of drill.
Solid design eliminates the slipping off.
The keyless drill chuck is tightened by the solidifying bolt to the shank, so that there is no possibility of slipping off during rotation or drilling.
Solidifying bolt
Keyless drill chuck
shank
3 Times Larger Chucking Power Even Carbide Drill does not occur Slipping. Run-out Accuracy of MAX. 0.04mm.
Drill chuck mounted by traditional drill chuck taper. Compact Design with Small Head line illustrates
BT 40 -JTA 6 - 45
the ISO or conven- tional drill chuck.
Centre through tool coolant NPU 13 can be used as centre through tool coolant holder for the shank diameter bigger equal to φ 6mm.(Option)
BT 40 -NPU 13 - 80
Rotary Bearing Cam ensuring Precision, Sensitivity & Long Tap Life. TAPPER CHUCK P. 52
Rotary Bearing Cam
Coil Spring
Rotary Bearing Cam Mechanism The both side of taper cones act sensitively and smoothly to the tapping torque vibration.
Taper Cone
Clutch Shaft (Taper Cone)
Drive color
Reversing torque is 1.4 times of normal rotation in order to prevent the trouble caused by swarf. Tap back motion preventing washer
One-Touch Tap Clamp Mechanism Tap never goes down due to smooth reaction.
Torque Life Curve
Slim Body & Fine Floating External Diameter as small as ever. Only NIKKEN Tapper Chuck performs even big size Tapping with slim body. The floating part is not a simple slide key, but plural preloaded balls are arranged in V-shape. That is why the tap slides smoothly without chattering accompanied.
100% The bearing cam with no sliding friction has been developed for the tap collet to protect the tap from break- age. The principle of this collet is fundamentally different from that of the conventional brake system utilizing a rubber reaction or a friction resistance 60% (A) Maker Friction crutch (Large vibration of torque) NIKKEN Rotary Bearing Cam System Tap breakage range
as shown by the following graphs (A) & (B) , so that constant torque characteristic as illustrated is obtainable to secure safety of tapping semipermanently.
(B) Maker Cam crutch (Short life due to wear)
Not enough torque to drive tap
10 2
10 3
10 4
10 5 times
10
15
Number of Tapping
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