N9 tolerance for keyway The first is Js9. The second is a P9 tolerance. 025: h9: 0. The width tolerance controls the size and form of the keyway, and the position tolerance controls the location and orientation of the centerplane (usually with the axis of the shaft OD as the datum feature). Related Resources: hardware. As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. The advantage of the Js9 tolerance is that the key can be Depending on the slot width tolerance, the following fit or seating results in combination with the parallel key: Tolerance b Hub keyway b Shaft keyway for tight fit P9 P9 for loose fit JS9 N9 for sliding D10 H9 The tolerance for l should be h12 under JIS B0401 (dimension tolerance and fitting), in principle. 025: 2: 0 -0. Membership Services. KeyWay /Key Dimensions. This is a +/- band clearance; the value of the tolerance is equally oversized or undersized. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys Sep 11, 2017 · cobra46, The most common method I've seen is a combination of size (width) and position. This is an undersized clearance. 16~0. Tolerance (H9) Tolerance (D10) Tolerance (N9) Tolerance (Js9 . 25: 2 Metric Key Keyway Dimensions Per ISO/R773 - Js9 Width Tolerance Table CHart. Scientific Calculator Popup. Keyway size; b h c or r Standard size of b1 and b2 Tightening type Normal type r1 and r2 t1 t2; Standard size Tolerance （h9） Standard size Tolerance b1/b2 tolerance（P9） b1 tolerance（N9） b2 tolerance（Js9） Standard size Tolerance Standard size Tolerance; 2×2: 6~8: 2: 0 -0. krmb phfq jbrr uokkow xenwcl ktgha dzbjv loc lbtptr tnh