HEAD LINER BUSHINGS
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HM
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FEATURES: Metric Head Liner Bushings are simply specific ID sizes of HM Head Press-Fit Bushings. Liners are permanent bushings used to hold renewable drill bushings. The liner's ID has a precise sliding fit with the renewable bushing's OD. The liner accurately locates the renewable bushing and protects the jig plate from wear and damage caused by frequent bushing replacement. Note: the "length" listed for an HM bushing refers to its overall length, not its length under the head.
STANDARD SIZES: See Dimensions page for part numbers. The prices shown apply to standard bushings only, as listed in the table.| | HM-18-25-12.00 | | Standard metric liner bushing |
STANDARD LINER ID TOLERANCE (G6):| | 8 to 10mm | | | | +.005/+.014mm | | | 12 to 18mm | | | | +.006/+.017mm | | | 22 to 30mm | | | | +.007/+.020mm | | | 35 to 48mm | | | | +.009/+.025mm | | | 55 to 78mm | | | | +.010/+.029mm | | | 85 to 105mm | | | | +.012/+.034mm |
MATERIAL: 1144 Stressproof steel, heat treated to achieve Rc 62-64 ID hardness. Other materials readily available by special order (see Specials).
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