Acme Gridley Machine - Automatic Screw Machine, Multiple Spindle Automatic Bar, Chucking, and Threading Machines made by Acme Gridley

The National Acme Company is the premiere manufacturer of Acme Gridley Multiple Spindle Automatic Bar and Chucking Machine with the brand name, "Acme-Gridley".

They have a wide range of machine models for flexibility of part production. Their machines have full CNC capability with in-position offsets and new high precision spindle carrier for increased accuracy.

They currently stock and make parts for the full line of Sheldon lathes.

Current equipment models include:

National Acme Bar Machines

• 7/16" (RA-6)
• 5/8" (RN-6)
• 9/16" (RA-6, RAN-6)
• 1" (RA-4, RA-6, RAN-6)
• 3/4" (RA-8)
• 1-1/4" (RA-6, RB-8, RBS-6, NC-6)
• 1-3/8" (AG-6)
• 1-5/8" (RAS-4, RB-6, RBN-8, RB-8, AG-6)
• 2" (RAS-4, RB-6, RB-8, SST)
• 2-5/8" (RB-4, RBC-4, RB-6, RB-8)
• 3-1/8" (SST)
• 3-1/2" (RB-4, RB-6, RB-8)
• 4" (RB-6, RB-8)
• 4-1/2" (RBT-4, BRG-4)
• 5-1/2" (RB-4, RBT-4, RBCS-4)
• 6" (RB-6)
• 6-3/4" (SST)
• 7-3/4" (RB-4)
• 8" (RBN-4)
• 10-5/8" (SST)
• 12" (SSC)
• 16" (AG-6)

National Acme Chucking Machines

• 2-3/8" (HSC-6)
• 5-1/4" (RAC-6)
• 6" (RPA-8, RLA-8[P.G., P.F., P.S.], 6-3/8" RPN-6)
• 8" (RPA-6)
• 8" (RPA-6, RPA-8)
• 10" (RPA-4, RPA-6)
• 12" (RPA-4, RPA-6)
• 406-NC

National Acme Threading Machines

• 2(HPL)
• 4(HPL)
• 6(HPL)
• 10(HPL)
• 12(HPL)
• HPL/PLY