轴承安装和拆卸

and removal

轴承安装和拆卸

Bearing installation and removal Cleanliness 清洁

Plan the work 准备工作

Inspection and preparation

检查和准备

Why does a bearing need to be properly

fitted on shaft and in housing? 为什么轴承需要正确的安装在轴上和轴承座里

To fully use the load carrying capacity of the bearing 完全承载To prevent rings from turning on or in their seating under load 防止轴承圈移位

To guarantee adequate internal clearance 保证适当内部间隙To reach bearing life expectancy 达到轴承预期寿命

To make safer and easier mounting and dismounting 使拆装安全简便To permit axial displacement for float bearing 允许浮动轴承轴向移动Bearing installation and removal

轴承安装和拆卸Direct shaft mounting, cylindrical / straight bore 直孔轴承直接装在轴上。

Direct shaft mounting, tapered bore 锥孔轴承直接装在轴上

Tapered adapter sleeve 锥孔适配套

Pull-type 紧定套

Push-type 推卸套

Bearing installation and removal for spherical roller bearings

调心滚子轴承的拆装

Bearing mounting arrangement 轴承安装简介

Dirty work bench 不够清洁的工作台Designate a suitable working area 指定一个合适的工作区Clean assembly area and tools 清洁装配区和工具

The following tools should be accessible before assembly procedure is started: eye bolts, handling fixtures, hooks, slings, wrenches, gauges and lubricating equipment. 事先准备好常用工具比如吊环螺栓，工装夹具，吊钩，吊带，扳手，量具和润滑设备

Preparation for mounting 准备安装

Bearing installation and removal

轴承安装与拆卸

Straight bore bearing mounting

直孔轴承安装Bearing installation 轴承安装

Bearing installation 轴承安装

Do not use torch to heat bearings 不要用喷加热轴承

Bearing installation 轴承安装

Induction heating 感应加热Induction heater 感应加热器

Heating in oil bath 油浴加热

Temperature 温度: < 250°F

Duration 时间: varies according to size 根据尺寸调整

15 minutes to two hours soak time 浸入时间

Bearing mounting 轴承安装

Bearing support block Non-conductive 轴承支撑块，不导热的Oil

high flash

point 热油

Flame burner 火源Bearing held from

bottom by screen

用网隔与底部隔开

Preparing for installation 准备安装Check for debris 检查毛刺

不允许毛刺突起

Ensure shaft integrity 保证轴的平直Shaft and housing inspection

procedure 轴和轴承座检查步骤Shaft and housing dimensions 轴和轴承座尺寸

Size 尺寸–OD tolerance 外径公差

Roundness 圆度–One-half OD tolerance 外径公差的一半

Straightness 平面度–One-half OD tolerance 外径公差的一半

Important shaft and housing attributes

Size –average diameter 尺寸

Form –roundness, straightness (taper)形状

Surface roughness –topography表面质量

Shaft Straight Tapered

63 rms

50 rms

Housing Fixed Float

125 rms63 rmsPrussian blue and precision straight edge or sine bar confirms surface topography 用普鲁士蓝和精密直规确认表面质量

Check in angular planes 检查带锥度的面

80% conformity required 要求吻合度

Check shaft shoulder

fillet radius检查轴肩倒角

Fillet radius too large

倒角过大

Correct Fillet radius 正确Shaft shoulder diameter 轴肩尺寸

Shoulder too small

轴肩过低Shoulder too large

轴肩过大

Correct shaft shoulder diameter

正确的轴肩

Handling hot bearing 搬运热轴承

Handling hot bearing 安装热轴承Ensure bearing is

flush with shaft

shoulder 保证轴承

与轴肩平齐

.002”feeler gage 塞规Hold bearing in

position while

cooling

在冷却时压住轴承

Protect the bearing 保护轴承Mounting tapered-bore spherical roller bearing

锥孔调心滚子轴承安装

Sine bar

set up

正弦规配置Eighty percent conformity required 测量吻合度

Measuring bench RIC 测量安装前间隙Drive bearing up tapered journal 将轴承推装在轴上

Hydraulic nut

液压螺母

Check mounted RIC 测量安装后间隙

Lock

washer

and nut

锁紧垫片和

锁紧螺母Lock plate

and nut

锁紧板和锁紧

螺母Push-type tapered adapter sleeve

紧定套

Pull-type

tapered

adapter

sleeve

退卸套Bearing in SAF style pillow block Stabilizing

ring inside

of block

固定环在带座

轴承内

Bearing

removal

轴承拆卸Bearing removal tools 轴承拆卸工具

Bearing removal 轴承拆卸

Pullers 拉拔器

Puller with

hydraulic assist

带液压辅助设备

的拉拔器

Inner Ring 内圈Apply Pressure Only On Tight

Fitted Ring

仅在紧配合的轴承圈上施力

Outer Ring 外圈

flush

Loosen, do not remove

松开螺母，但不要拿掉！

Mechanics of hydraulic removal 液压拆卸的机械结构

Pressure moves bearing down

油压使得轴承被拆下Straight bore removal with hydraulic assist 液压辅助直孔轴承拆卸

Hydraulic dismounting

circumferential groove

拆卸用液压环形槽Considerations for optimizing bearing life

获得最优轴承寿命的考虑因素

Proper installation and clearances 正确地安装和清洁

Accurate shaft and housing geometry 精确的轴和轴承座形状

System alignment 系统保证同心

Proper lubrication 正确地润滑

Protection from contaminants/moisture 保护轴承隔离水气和污染物

谢谢！