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Atlas Easy-Set 3 & 6-Jaw Scroll Chucks

Low Cost Atlas 3 & 6-Jaw Chucks
Direct Replacement for the Buck Adjust-Tru® Early Design

• High value, Lower cost
• One-year warranty
• Precision manufactured for adapter plate mounting — utilizes the same mounting plate as the PBA SETRITE™ and other popular adjustable universal chucks
• .0005 repeatability on duplicate parts
• 4 adjusting screws
• Chuck Sizes 6″, 8″, 10″, 12″ and 15″
• Hardened scroll
• Hardened pinion
• Two-piece tongue and groove jaws
• Semi-steel body

 

EZ Set Manual 2021

Easy-Set™ Self-Centering Universal Chuck
Chuck Size (in)Model NumberApprox.
Weight (lbs)		Maximum RPM*
Easy-Set - 3 Jaw
6EZ63213000
8EZ83402500
10EZ103652000
12EZ1231141500
15EZ1532201000
20EZ203395700
25EZ243640500
Easy-Set - 6 Jaw
6EZ66182500
8EZ86472200
10EZ106702000
12EZ1261081500
15EZ156240700
20EZ206408400
25EZ246652250
*Eccentric adjustment of chuck on adapter to obtain required TIR on the workpiece may
result in unacceptable vibration at maximum RPMs. Reduce RPMs accordingly.
Dimensional Data for Series Adapter Mounting Self-Centering Chucks
Chuck SizeGripping Capacity
AB*CDEFG1G2HKMin.**Max.
6"6.0"3.125"1.540"2.520"1.728"0.690"5.34"-6.5"1/4"1/8"5.0"
8"8.27"4.750"2.362"3.122"1.141"0.750"7.50"-8.5"3/8"3/16"6.5"
10"10.0"6.374"3.032"3.504"2.118"0.830"-4.38"11.0"7/16"15/32"8.0"
12"12.0"7.905"4.051"4.035"1.652"0.799"-5.25"12.5"1/2"27/64"10.0"
15"15.0"11.781"4.559"5.362"2.165"1.091-6.75"16.0"5/8"9/16"15.0"
20"19.66"16.03"7.480"9.280"3.610"1.180"-9.25"20.0"3/4"1.18"18.82"
25" 24.08"16.03"9.920"9.950"3.610"1.180"-9.25"25.0"3/4"1.57"24.08"
* Tolerance - .003/+.002 **6-Jaw Chuck minimum grip, consult factory
1. Bolt circle on 6" and 8" chucks are outside the pilot recess "B" as shown.
Bolt circle on 10", 12" and 15" Dia. chucks are inside "B" dimension.
® Ajust-Tru is a registered trade mark of Illinois Tool Works.
Mounting Plates For Easy-Set™ 3-Jaw and 6-Jaw Chucks
Atlas Workholding offers a full line of Mounting Plates type "D", "A", "L" and threaded plates for the Easy-Set™ Chucks.Our Mounting Plates are interchangeable with other popular adjustable universal style Chucks.

Mounting plates are precision machined to suit the spindle nose of your machine. For maximum accuracy of mounting plates, mount plate on machine spindle nose, place a dial indicator on the chuck side face of the adapter close to the mounting holes, rotate the adapter and if the total indicator reading (TIR) exceeds .0005" take a light truing cut across the face of the mounting plate.
Type D Camlock Mountings
Spindle6"8"10"12"15"
D-3605020805020---
D-4605021805021---
D-56050228050221005022--
D-6-80502310050231205023-
D-8--100502412050241505024
D-11---12050251505025
Type A American Standard A-1 & A-2, Spindles
Spindle6"8"10"12"
A-4605009---
A-56050108050101005010-
A-6-80501110050111205011
A-8--10050121205012
Type L American Standard Long Taper Key Drive Spindle
Spindle6"8"10"12"
L-006050318050311005031-
L-060503280503210050321205032
L-1-80503310050331205033
L-2--10050341205034
For Hardinge® and Elgin Lathe
Spindle6"
4° Taper605044
2-3⁄16"-10 TH’D605045
Also available plates for rotary tables
Threaded & Blank Mountings* for Easy-Set™Chucks
Spindle6"8"
Blank605040805040
1-1⁄2"-8605041805041
1-3⁄4"-8605042805042
2-1⁄4"-8605043805043
2-3⁄8"-6605046805046
*Blank Mountings are finished on the chuck side of the mounting plate, and blank on the machine side
Hardinge is a registered trademark of Hardinge Inc.
For standard spindle dimensions, click here.