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ĐƯỜNG KÍNH
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TỐC ĐỘ QUAY ĐỀ NGHỊ V/PHÚT
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.001” to .004”
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300,000 to 450,000
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.005” to .015”
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65,000 to 150,00
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.016” to .030”
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30,00 to 65,000
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.031” to .090”
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9,000 to 30,000
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1/8” (3.18mm)
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2,500
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3/16” (4.76mm)
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2,250
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¼” (6.35mm)
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2,000
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5/16” (7.94mm)
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1,500
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3/8” (5.52mm)
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1,250
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7/16” (11.1mm)
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1,000
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½” (12.7mm)
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950
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9/16" (14.28mm)
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925
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5/8" (15.87mm)
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875
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2/3" (16.93mm)
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850
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11/16" (17.46mm)
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850
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3/4" (19.05mm)
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825
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7/8" (22.22mm)
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775
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1.0" (25.4mm)
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700
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1-1/8" (28.57mm)
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675
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1-1/4" (1-1/4mm)
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650
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1-3/8" (34.92mm)
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600
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1-1/2" (38.10mm)
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550
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1-5/8" (41.27mm)
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550
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1-3/4" (44.45mm)
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550
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2.00" (50.80mm)
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525
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2-1/4" (57.15mm)
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500
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2-1/2" (63.50mm)
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475
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3.00" (76.20mm)
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450
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3-1/2" (88.90mm)
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425
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4.00" (101.60mm)
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400
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6.00" (152.40mm)
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300
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