COLLET CHUCKS
R
Also available in N/C lathe type. See pg. 17.
CLAMPING RANGE: ø.075"-.787" For drills, reamers, taps and finishing end mills.
Clamping Range: ø.125"-.500" Exclusively for high-speed finish end milling. The advanced tapered body technology enhances rigidity to prevent chatter and deflection with precision.
The total precision of our collet, nut and body when used together shatter the common standard of ER collet chucks. Incredibly low runout will provide dramatic payback by improving machining capability & reducing production costs.
Through Tools
Jet Through
MAX 35,000 RPM
MAX 40,000 RPM
MEGA ER PERFECT SEAL For two-way coolant supply.
MEGA E PERFECT SEAL Optional sealed collet nut for coolant through tools. Remove the internal PS Ring to supply coolant to the cutting tool periphery. However, by using the standard MEGA E NUT, coolant can still be directed to the cutting tool through slits in the collet, as seen above.
MEGA ER SOLID NUT Slot-free outer diameter increases rigidity of the nut. ER NUT
Thrust Ball Bearing
MEGA ER NUT A notch-free nut prevents vibration and noise. Steel balls in the thrust bearing are retained by a mechanism inside the nut designed for high-speed operation. MEGA NUT is the recommended nut to achieve high accuracy and clamping force.
Basic nut with surface treatment for friction reduction.
9
Slit-Through Coolant with Standard MEGA E NUT
Best Runout Accuracy in The World ERC COLLET
Guaranteed Max Runout
AT COLLET NOSE 3μm at end of test bar 1 μm
.00004"
.00012"
Each ERC collet is inspected twice (0º and 180º) at four times diameter to guarantee the runout accuracy.
4d
Powerful Clamping Force
All BIG Collets are AA Grade and inspected twice for accuracy
Extended Clamping Area
Bearings
High Rigidity Body
Difference in Runout Accuracy
By increasing the contact length of the internal taper of chuck bodies, the undesired overhang of the collet is reduced. This modification of the current DIN standard improves 3 of the most important requirements a collet chuck: rigidity, runout accuracy & clamping force.
.0010
Shallow Taper
Seals
.0008
MEGA E COLLET Exact sizes, shallow taper and extended clamping length enhances the clamping and self-centering forces for stable performance.
Competitor’s ER Chuck
.0006
.0004
MEGA ER
AT COLLET NOSE 3μm at end of test bar 1 μm
Short
Guaranteed Max Runout
MEGA ER GRIP
.0002
.00004" .00012" 4d
0
2
3
4
5
1
Number of Measurements
All BIG Collets are AA Grade and inspected twice for accuracy
High-precision runout accuracy less than .00012" (3μm) at 4xD improves the workpiece surface finish and extends tool life. Repeatability has less than .00006" (1.5μm) of variance.
Current DIN Standard
Long
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