NAB-500

Ultra-precision saw arbors with 15x the gripping force of screw-cap designs — every size available in a thru-coolant (-TC) version that floods the cut through solid carbide CF flanges.

• 15x gripping force — nut-clamped design grips the saw far harder than screw-cap arbors, solving slippage in high-torque cuts
• Eight sizes from 1/4" to 1-1/4" arbor diameter (NAB-250 through NAB-1250), each also available as a -TC thru-coolant version
• Published clamp-nut torque specs per size: NAB-250 96 in-lb, NAB-375 300 in-lb, NAB-500 and NAB-625 540 in-lb, NAB-750 through NAB-1250 600 in-lb
• Spacer sets included with every arbor (.0625"/.125"/.1875" on 1/4" and 3/8"; .0625"/.1875"/.25" on 1/2" and up)
• Removable keyway drive, available upon request: 1/8" key on 5/8"-7/8" sizes, 1/4" on 1", 5/16" on 1-1/4" (1/4"-1/2" sizes have no standard keyway)
• Tightest tolerances in the industry: arbor size -.0001"/-.0003", shank diameter -.0001"/-.0004", runout .0005" max — RobbJack arbors hold less than .0002" runout assembled
• CF solid carbide thru-coolant flanges are required (sold in pairs) when running the -TC thru-coolant versions

From the RobbJack Applications Guide.