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发布日期:2021年12月01日
419是什么意思最新章节目录_419是什么意思无弹窗,葫芦娃h最新章节_葫芦娃h最新章节目录,性爱卡通无弹窗_性爱卡通无弹窗全文阅读
FIT TOLERANCES FOR PARALLEL / TAPER KEY - KEYSEAT ASSEMBLIES

ANSI B17.1 standard identifies two classes of stock for parallel keys. One is a close, plus toleranced key stock and the other is a broad, negative toleranced bar stock. Each is combined with appropriate keyseat tolerances to make assemblies. Based on the use of two types of stock, two classes of fit are given. Class 1 is a clearance or metal-to-metal side fit obtained by using bar stock keys and keyseat tolerances. This is a relatively free fit and applies only to parallel keys. Class 2 is a side fit, with possible interference or clearance, obtained by using key stock and keyseat tolerances as given in this page. This is a relatively tight fit.

Fit Tolerances for Parallel & Taper Keys:

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INPUT PARAMETERS
Key Type
419是什么意思最新章节目录_419是什么意思无弹窗,葫芦娃h最新章节_葫芦娃h最新章节目录,性爱卡通无弹窗_性爱卡通无弹窗全文阅读
Fit Type
Key Cross Section
Nominal Key Size Width [over - to (incl.)]


RESULTS
Parameter Value
Key Type--- ---
Fit Type---
Key Cross Section--- 419是什么意思最新章节目录_419是什么意思无弹窗,葫芦娃h最新章节_葫芦娃h最新章节目录,性爱卡通无弹窗_性爱卡通无弹窗全文阅读
Key Width [over - to (incl.)]--- inch
SIDE FIT
Key Width Upper Deviation--- inch
Key Width Lower Deviation---
Keyseat Width Upper Deviation---
Keyseat Width Lower Deviation---
Maximum Clearance---
Minimum Clearance---
TOP AND BOTTOM FIT
Key Depth Upper Deviation--- inch
Key Depth Lower Deviation---
Shaft Keyseat Depth Upper Deviation---
Shaft Keyseat Depth Lower Deviation---
Hub Keyseat Depth Upper Deviation---
Hub Keyseat Depth Lower Deviation---
Maximum Clearance---
Minimum Clearance---

Definitions:

Keyseat: An axially located rectangular groove in a shaft or hub. Hub keyseat has been sometimes referred to as a keyway

Sunk Key: A standard form of key with rectangular or square cross-section in which the key fits into the keyseats on the shaft and the hub.

Reference:

  • Oberg, E. , Jones ,F.D. , Horton H.L. , Ryffel H.H., (2016) . Machinery's Handbook . 30th edition.  Industrial Press Inc.
  • Oberg, E. , Jones ,F.D. , Horton H.L. , Ryffel H.H., (2012) . Machinery's Handbook . 29th edition.  Industrial Press Inc.
  • ANSI B17.1-1967, Keys and Keyseats