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Milling Machine Arbors

Style A piloted Milling Machine Arbors

Style A Horizontal Milling Machine Arbors.
Style A arbors feature a pilot 23/32" diam. x 1 3/4" long.
For milling machines having # 30, 40, and 50 national standard taper spindles.
Arbors are complete with assorted width arbor spacers and running bushings as listed below.
Arbors and arbor spacers have standard keyways.
All parts are hardened, ground and lapped; threads are ground.

These low prices are limited to quantities in stock.
Quantity Price Model Description Taper Arbor Diameter Length - Shoulder to Nut Diameter of Running Bushings Bushings

$310.00 MM-30-7/8-A10-2
#30 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0005 30 7/8" 10" 1 5/8" 1

$345.00 MM-31-A10-2
#30 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0010 30 1" 10" 1 5/8" 1

$370.00 MM-31-1/4-A10-2
#30 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0015 30 1-1/4" 10" 1 7/8" 1

$330.00 MM-40-7/8-A10-2
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0017 40 7/8" 10" None None

$435.00 MM-40-7/8-A16-3
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0020 40 7/8" 16" 1 7/8" 1
Out of stock
$330.00 MM-41-A8
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0025 40 1" 8" None None

$350.00 MM-41-A10
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0030 40 1" 10" None None

$405.00 MM-41-A12
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0035 40 1" 12" None None

$490.00 MM-41-A16-3
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0040 40 1" 16" 1 7/8" 1

$350.00 MM-41-1/4-A8
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0045 40 1 1/4" 8" None None

$410.00 MM-41-1/4-A12
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0055 40 1-1/4" 12" None None

$510.00 MM-41-1/4-A16-3
#40 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0060 40 1 1/4" 16" 1 7/8" 1

$420.00 MM-50-7/8-A10
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0065 50 7/8" 10" None None

$595.00 MM-50-7/8-A18-4
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0070 50 7/8" 18" 2 1/8" 1

$350.00 MM-51-A8
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0075 50 1" 8" None None

$455.00 MM-51-A12
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0080 50 1" 12" None None

$460.00 MM-51-A18-4
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0085 50 1" 18" 2 1/8" 1

$380.00 MM-51-1/4-A8
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0090 50 1 1/4" 8" None None

$530.00 MM-51-1/4-A12
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0095 50 1 1/4" 12" None None

$655.00 MM-51-1/4-A18-4
#50 NST Style A (w/ Pilot) Milling Machine Arbor, 1600-0100 50 1 1/4" 18" 2 1/8" 1

Style B Milling Machine Arbors

Style B Milling Machine Arbors.
Style B arbors have NO PILOT.
For milling machines having # 30, 40, and 50 National Standard Taper spindles.
Arbors are complete with assorted width arbor spacers and running bushings as listed below.
Arbors and arbor spacers have standard keyways.
All parts are hardened, ground and lapped; threads are ground.

These low prices are limited to quantities in stock.
Quantity Price Model Description Taper Arbor Diameter Length - Shoulder to Nut Diameter of Running Bushings Bushings

$410.00 MM-40-7/8-B14-3
#40 Style B Milling Machine Arbor, 1600-0110 40 7/8" 14" 1 7/8" 1

$395.00 MM-40-7/8-B16-3
#40 Style B Milling Machine Arbor, 7/8" X 16" S-N, 1600-0115 40 7/8" 16" 1-7/8" 1

$450.00 MM-41-B14-3
#40 Style B Milling Machine Arbor, 1600-0125 40 1" 14" 1 7/8" 1

$490.00 MM-41-B20-3
#40 Style B Milling Machine Arbor, 1600-0130 40 1" 20" 1 7/8" 1

$485.00 MM-41-1/4-B14-3
#40 Style B Milling Machine Arbor, 1600-0140 40 1 1/4" 14" 1 7/8" 1

$580.00 MM-41-1/4-B20-3
#40 Style B Milling Machine Arbor, 1600-0145 40 1 1/4" 20" 1 7/8" 1

$685.00 MM-41-1/2-B20-4
#40 Style B Milling Machine Arbor, 1600-0150 40 1 1/2" 20" 2 1/8" 1

$465.00 MM-51-B15-4
#50 Style B Milling Machine Arbor, 1600-0160 50 1" 15" 2 1/8" 1

$545.00 MM-51-B18-4
#50 Style B Milling Machine Arbor, 1600-0165 50 1" 18" 2 1/8" 2

$645.00 MM-51-B24-4
#50 Style B Milling Machine Arbor, 1600-0170 50 1" 24" 2 1/8" 2

$550.00 MM-51-1/4-B15-4
#50 Style B Milling Machine Arbor, 1600-0180 50 1 1/4" 15" 2 1/8" 1

$640.00 MM-51-1/4-B18-4
#50 Style B Milling Machine Arbor, 1600-0185 50 1 1/4" 18" 2 1/8" 2

$595.00 MM-51-1/4-B24-4
#50 Style B Milling Machine Arbor, 1600-0190 50 1 1/4" 24" 2 1/8" 2

$810.00 MM-51-1/4-B30-4
#50 Style B Milling Machine Arbor, 1600-0195 50 1 1/4" 30" 2 1/8" 2

$595.00 MM-51-1/2-B18-4
#50 Style B Milling Machine Arbor, 1600-0205 50 1 1/2" 18" 2 1/8" 2

$625.00 MM-51-1/2-B24-5
#50 Style B Milling Machine Arbor, 1600-0210 50 1 1/2" 24" 2 3/4" 2

$860.00 MM-51-1/2-B30-5
#50 Style B Milling Machine Arbor, 1600-0215 50 1 1/2" 30" 2 3/4" 2
Out of stock
$920.00 MM-51-1/2-B36-5
#50 Style B Milling Machine Arbor, 1600-0220 50 1 1/2" 36" 2 3/4" 2

$860.00 MM-52-B24-5
#50 Style B Milling Machine Arbor, 1600-0225 50 2" 24" 2 3/4" 2

$975.00 MM-52-B30-5
#50 Style B Milling Machine Arbor, 1600-0230 50 2" 30" 2 3/4" 2

$1085.00 MM-52-B36-5
#50 Style B Milling Machine Arbor, 1600-0240 50 2" 36" 2 3/4" 2

$1660.00 MM-52-1/2-B36-6
#50 Style B Milling Machine Arbor, 1600-0245 50 2 1/2" 36" 3 3/8" 2

Arbor Spacers

Arbor Spacers.
Hardened and ground on all surfaces.
Lapped for parallelism. With keyways.
Quantity Price Model Description Width Bore O.D.

$8.50 SPA-7/8-1/8
Arbor Spacer, 7/8" ID, 1/8" thick, 9208-0105 1/8" 7/8" 1-3/8"

$3.15 SPA-7/8-3/16
Arbor Spacer, 7/8" ID, 3/16" thick, 9208-0110 3/16" 7/8" 1-3/8"

$9.15 SPA-7/8-1/4
Arbor Spacer, 7/8" ID, 1/4" thick, 9208-0115 1/4" 7/8" 1-3/8"

$3.65 SPA-7/8-5/16
Arbor Spacer, 7/8" ID, 5/16" thick, 9208-0120 5/16" 7/8" 1-3/8"

$9.95 SPA-7/8-3/8
Arbor Spacer, 7/8" ID, 3/8" thick, 9208-0125 3/8" 7/8" 1-3/8"

$10.20 SPA-7/8-7/16
Arbor Spacer, 7/8" ID, 7/16" thick, 9208-0130 7/16" 7/8" 1-3/8"

$10.60 SPA-7/8-1/2
Arbor Spacer, 7/8" ID, 1/2" thick, 9208-0135 1/2" 7/8" 1-3/8"

$11.20 SPA-7/8-5/8
Arbor Spacer, 7/8" ID, 5/8" thick, 9208-0140 5/8" 7/8" 1-3/8"

$13.20 SPA-7/8-3/4
Arbor Spacer, 7/8" ID, 3/4" thick, 9208-0145 3/4" 7/8" 1-3/8"

$13.60 SPA-7/8-7/8
Arbor Spacer, 7/8" ID, 7/8" thick, 9208-0150 7/8" 7/8" 1-3/8"

$14.20 SPA-7/8-1
Arbor Spacer, 7/8" ID, 1" thick, 9208-0155 1" 7/8" 1-3/8"

$15.90 SPA-7/8-1-1/4
Arbor Spacer, 7/8" ID, 1-1/4" thick, 9208-0160 1-1/4" 7/8" 1-3/8"

$16.80 SPA-7/8-1-1/2
Arbor Spacer, 7/8" ID, 1-1/2" thick, 9208-0165 1-1/2" 7/8" 1-3/8"

$19.20 SPA-7/8-2
Arbor Spacer, 7/8" ID, 2" thick, 9208-0170 2" 7/8" 1-3/8"

$14.50 SPA-7/8-3
Arbor Spacer, 7/8" ID, 3" thick, 9208-0175 3" 7/8" 1-3/8"

$8.65 SPA-1-1/8
Arbor Spacer, 1" ID, 1/8" thick, 9208-0190 1/8" 1" 1-1/2"

$9.05 SPA-1-3/16
Arbor Spacer, 1" ID, 3/16" thick, 9208-0195 3/16" 1" 1-1/2"

$10.00 SPA-1-1/4
Arbor Spacer, 1" ID, 1/4" thick, 9208-0200 1/4" 1" 1-1/2"

$10.40 SPA-1-5/16
Arbor Spacer, 1" ID, 5/16" thick, 9208-0205 5/16" 1" 1-1/2"

$10.80 SPA-1-3/8
Arbor Spacer, 1" ID, 3/8" thick, 9208-0210 3/8" 1" 1-1/2"

$11.10 SPA-1-7/16
Arbor Spacer, 1" ID, 7/16" thick, 9208-0215 7/16" 1" 1-1/2"

$11.50 SPA-1-1/2
Arbor Spacer, 1" ID, 1/2" thick, 9208-0220 1/2" 1" 1-1/2"

$12.20 SPA-1-5/8
Arbor Spacer, 1" ID, 5/8" thick, 9208-0225 5/8" 1" 1-1/2"

$13.90 SPA-1-3/4
Arbor Spacer, 1" ID, 3/4" thick, 9208-0230 3/4" 1" 1-1/2"

$14.40 SPA-1-7/8
Arbor Spacer, 1" ID, 7/8" thick, 9208-0235 7/8" 1" 1-1/2"

$14.60 SPA-1-1
Arbor Spacer, 1" ID, 1" thick, 9208-0240 1" 1" 1-1/2"

$17.70 SPA-1-1-1/4
Arbor Spacer, 1" ID, 1-1/4" thick, 9208-0245 1-1/4" 1" 1-1/2"

$18.70 SPA-1-1-1/2
Arbor Spacer, 1" ID, 1-1/2" thick, 9208-0250 1-1/2" 1" 1-1/2"

$20.80 SPA-1-2
Arbor Spacer, 1" ID, 2" thick, 9208-0255 2" 1" 1-1/2"

$28.50 SPA-1-3
Arbor Spacer, 1" ID, 3" thick, 9208-0260 3" 1" 1-1/2"

$8.45 SPA-1-1/4-1/8
Arbor Spacer, 1-1/4" ID, 1/8" thick, 9208-0275 1/8" 1-1/4" 1-3/4"

$8.95 SPA-1-1/4-3/16
Arbor Spacer, 1-1/4" ID, 3/16" thick, 9208-0280 3/16" 1-1/4" 1-3/4"

$10.20 SPA-1-1/4-1/4
Arbor Spacer, 1-1/4" ID, 1/4" think 9208-0285 1/4" 1-1/4" 1-3/4"

$10.60 SPA-1-1/4-5/16
Arbor Spacer, 1-1/4" ID, 5/16" thick, 9208-0290 5/16" 1-1/4" 1-3/4"

$11.10 SPA-1-1/4-3/8
Arbor Spacer, 1-1/4" ID, 3/8" thick, 9208-0295 3/8" 1-1/4" 1-3/4"

$11.40 SPA-1-1/4-7/16
Arbor Spacer, 1-1/4" ID, 7/16" thick, 9208-0300 7/16" 1-1/4" 1-3/4"

$11.80 SPA-1-1/4-1/2
Arbor Spacer, 1-1/4" ID, 1/2" thick, 9208-0305 1/2" 1-1/4" 1-3/4"

$12.50 SPA-1-1/4-5/8
Arbor Spacer, 1-1/4" ID, 5/8" thick, 9208-0310 5/8" 1-1/4" 1-3/4"

$14.50 SPA-1-1/4-3/4
Arbor Spacer, 1-1/4" ID, 3/4" thick, 9208-0315 3/4" 1-1/4" 1-3/4"

$14.60 SPA-1-1/4-7/8
Arbor Spacer, 1-1/4" ID, 7/8" thick, 9208-0320 7/8" 1-1/4" 1-3/4"

$15.70 SPA-1-1/4-1
Arbor Spacer, 1-1/4" ID, 1" thick, 9208-0325 1" 1-1/4" 1-3/4"

$18.70 SPA-1-1/4-1-1/4
Arbor Spacer, 1-1/4" ID, 1-1/4" thick, 9208-0330 1-1/4" 1-1/4" 1-3/4"

$18.40 SPA-1-1/4-1-1/2
Arbor Spacer, 1-1/4" ID, 1-1/2" thick, 9208-0335 1-1/2" 1-1/4" 1-3/4"

$22.70 SPA-1-1/4-2
Arbor Spacer, 1-1/4" ID, 2" thick, 9208-0340 2" 1-1/4" 1-3/4"

$27.70 SPA-1-1/4-3
Arbor Spacer, 1-1/4" ID, 3" thick, 9208-0345 3" 1-1/4" 1-3/4"

$10.90 SPA-1-1/2-1/8
Arbor Spacer, 1-1/2" ID, 1/8" thick, 9208-0360 1/8" 1-1/2" 2-1/8"

$11.60 SPA-1-1/2-3/16
Arbor Spacer, 1-1/2" ID, 3/16" thick, 9208-0365 3/16" 1-1/2" 2-1/8"

$12.30 SPA-1-1/2-1/4
Arbor Spacer, 1-1/2" ID, 1/4" thick, 9208-0370 1/4" 1-1/2" 2-1/8"

$12.90 SPA-1-1/2-5/16
Arbor Spacer, 1-1/2" ID, 5/16" thick, 9208-0375 5/16" 1-1/2" 2-1/8"

$13.40 SPA-1-1/2-3/8
Arbor Spacer, 1-1/2" ID, 3/8" thick, 9208-0380 3/8" 1-1/2" 2-1/8"

$13.90 SPA-1-1/2-7/16
Arbor Spacer, 1-1/2" ID, 7/16" thick, 9208-0385 7/16" 1-1/2" 2-1/8"

$14.30 SPA-1-1/2-1/2
Arbor Spacer, 1-1/2" ID, 1/2" thick, 9208-0390 1/2" 1-1/2" 2-1/8"

$14.30 SPA-1-1/2-5/8
Arbor Spacer, 1-1/2" ID, 5/8" thick, (limited quantity) 9208-0395 5/8" 1-1/2" 2-1/8"

$17.00 SPA-1-1/2-3/4
Arbor Spacer, 1-1/2" ID, 3/4" thick, 9208-0400 3/4" 1-1/2" 2-1/8"

$17.00 SPA-1-1/2-7/8
Arbor Spacer, 1-1/2" ID, 7/8" thick, (limited quantity) 9208-0405 7/8" 1-1/2" 2-1/8"

$18.80 SPA-1-1/2-1
Arbor Spacer, 1-1/2" ID, 1" thick, 9208-0410 1" 1-1/2" 2-1/8"

$20.70 SPA-1-1/2-1-1/4
Arbor Spacer, 1-1/2" ID, 1-1/4" thick, 9208-0415 1-1/4" 1-1/2" 2-1/8"

$20.70 SPA-1-1/2-1-1/2
Arbor Spacer, 1-1/2" ID, 1-1/2" thick, (limited quantity) 9208-0420 1-1/2" 1-1/2" 2-1/8"

$29.90 SPA-1-1/2-2
Arbor Spacer, 1-1/2" ID, 2" thick, 9208-0425 2" 1-1/2" 2-1/8"

$40.50 SPA-1-1/2-3
Arbor Spacer, 1-1/2" ID, 3" thick, 9208-0430 3" 1-1/2" 2-1/8"

$14.30 SPA-2-1/8
Arbor Spacer, 2" ID, 1/8" thick, 9208-0445 1/8" 2" 2-3/4"

$15.30 SPA-2-3/16
Arbor Spacer, 2" ID, 3/16" thick, 9208-0450 3/16" 2" 2-3/4"

$16.20 SPA-2-1/4
Arbor Spacer, 2" ID, 1/4" thick, 9208-0455 1/4" 2" 2-3/4"

$16.90 SPA-2-5/16
Arbor Spacer, 2" ID, 5/16" thick, 9208-0460 5/16" 2" 2-3/4"

$17.90 SPA-2-3/8
Arbor Spacer, 2" ID, 3/8" thick, 9208-0465 3/8" 2" 2-3/4"

$17.90 SPA-2-7/16
Arbor Spacer, 2" ID, 7/16" thick, (limited quantity) 9208-0470 7/16" 2" 2-3/4"

$19.70 SPA-2-1/2
Arbor Spacer, 2" ID, 1/2" thick, 9208-0475 1/2" 2" 2-3/4"

$21.10 SPA-2-5/8
Arbor Spacer, 2" ID, 5/8" thick, 9208-0480 5/8" 2" 2-3/4"

$23.10 SPA-2-3/4
Arbor Spacer, 2" ID, 3/4" thick, 9208-0485 3/4" 2" 2-3/4"

$25.10 SPA-2-7/8
Arbor Spacer, 2" ID, 7/8" thick, 9208-0490 7/8" 2" 2-3/4"

$26.10 SPA-2-1
Arbor Spacer, 2" ID, 1" thick, 9208-0495 1" 2" 2-3/4"

$29.00 SPA-2-1-1/4
Arbor Spacer, 2" ID, 1-1/4" thick, 9208-0500 1-1/4" 2" 2-3/4"

$32.60 SPA-2-1-1/2
Arbor Spacer, 2" ID, 1-1/2" thick, 9208-0505 1-1/2" 2" 2-3/4"

$38.80 SPA-2-2
Arbor Spacer, 2" ID, 2" thick, 9208-0510 2" 2" 2-3/4"

$47.40 SPA-2-3
Arbor Spacer, 2" ID, 3" thick, 9208-0515 3" 2" 2-3/4"