• August 13, 2022
  • Machine Tools
  • Cutting Tools
  • Software
  • Metrology
  • Accessories
  • Mechatronics
  • About us
  • Contact us
  • REGISTER
  • SIGN IN
www.cnctimes.com logo
  • News
  • CT+
  • Webinar
  • Knowledge Center
    • INDUSTRY UPDATES
    • INTERVIEWS
    • VIDEOS
    • TECHNICAL ARTICLES
    • CASE STUDIES
    • PRODUCT SHOWCASE
    • BLOGS
    • SUCCESS STORIES
    • NEWSLETTERS
  • Start Your Subscription
  • Register
  • Sign in

Information

Please login to give the feedback.

Subscription Plans

Subscription Type
Duration
Months
News
Articles
Blogs
Case Studies
Videos
Product Updates
Webinar
Amount
CT
Lifetime
Lifetime
Full Access
Limited Access
Full Access
Limited Access
Limited Access
Limited Access
No Discount
INR 0.00
CT+
6 Months
6 Months
Full Access
Full Access
Full Access
Full Access
Full Access
Full Access
5% Discount
INR 599.00
CT+
Annual
12 Months
Full Access
Full Access
Full Access
Full Access
Full Access
Full Access
10% Discount
INR 999.00

Subscription Plans

Subscription Type
Duration
Months
News
Articles
Blogs
Case Studies
Videos
Product Updates
Webinar
Amount
CT
Lifetime
Lifetime
Full Access
Limited Access
Full Access
Limited Access
Limited Access
Limited Access
No Discount
INR 0.00
CT+
6 Months
6 Months
Full Access
Full Access
Full Access
Full Access
Full Access
Full Access
5% Discount
INR 599.00
CT+
Annual
12 Months
Full Access
Full Access
Full Access
Full Access
Full Access
Full Access
10% Discount
INR 999.00
Successfully registered. Please check your email to activate account.

Registration
  • Sign In



Sorry Captcha Unsuccessful!!

Sign In


OR
If your not registered user first Register
  1. Home
  2. Blogs
  3. Spindle repair: A complex but important process

Spindle repair: A complex but important process

18 January, 2017
  • Tweet
  • share via email
Your comment has been posted.
We have sent you a verification email. To verify, just follow the link in the message.
Some technical error. Please try again.

By Niraj M Wanikar, Chief Editor, CNCTimes.com, 2017-01-18 16:08:00

Machining Center spindle repairs is a complex activity by itself. Being manager of independent spindle repair house, I will always advocate the need to get this repaired from us. But Why? There are solid reasons behind it.

While most of our customers are from automobile ancillaries, they are talented ones. So there is no doubt of their competency on rebuilding spindles. Still, I feel that there some factors which are not known to them.

Which are those factors?

Non-availability of proper tooling and equipment to dismantle and assemble the spindle: High-end spindles like Franz Kessler, Weiss, Makino, Mazak, Okuma, Doosan use shrink fitted lock nuts. These lock nuts are used to lock the bearings and in some cased to lock the rotors as well. One needs special equipment like oil injection pumps to remove such lock nuts. We also need press to dismantle spindles with suitable sleeves. However, this tooling is not available in maintenance departments of respective companies.

Complexities of assembly: There are some elements in the spindle assembly which challenges conventional method. E.g. In one the spindles, we observed that lock nut was tightened on threads by provision of grub screw which has access to it from ID of spindle. In addition to this there are bearing arrangements which are deceptive.

Availability of genuine and right spares in particular bearings: There are numerous precision bearing suppliers all across India. However, one needs to understand that bearing interchangeability is never limited to boundary dimensions of bearings but it also to be checked for geometrical configurations. There are some Makino A series machines which use bearings with holes on the inner ring to facilitate lubrication. Or we have found in one of the Mazak spindle, bearings with groove and holes on outer ring of the bearings. All these special arrangements are provided for some purpose. If we do not use exact equivalent, spindle is likely to fail within no time. Take case of disc springs which is C class item. Still, we are not lucky to have source of consistent quality disc springs. We have to be dependent on foreign suppliers.

Lack of knowledge of critical processes in spindle rebuilding: Machining center spindle reconditioning is not mere replacement of bearings. But there are some auxiliary activities to be carried out for successful repairs. Taper grinding is such an important activity. Many people do have knowledge and tooling to regrind BT or ISO tapers. But new edge spindles with HSK tapers do have complex tooling and process. Not many people are aware of it. Grafting of tapered sleeve is another process which we have mastered.

Testing of spindle:  The whole success of spindle repairs activity lies in testing of it. One should have capability to test the spindle to the final parameters. You will find there are many electronic components like encoder, clamp/declamp sensors etc, which are to be checked for its function-ability. It is painstaking process to find that the spindle is having problem once it is put on the machine.

There are few more points which I will try to explain in due course of time. But for all the above reasons, I strongly recommend to get spindle repaired from Independent spindle repair house like Setco.

About the Author:

Rajesh Mandlik is the Managing Director of Setco Spindles India Pvt Ltd with 28 years of industrial experience. He worked with SKF India Ltd and Rollon Hyadualics before starting his own business by name Ultra Precision Spindles. Eventually this business was taken over by Setco USA in 2012. He is an avid blogger and likes to write on social, technical and management issues. He also likes to interact with students to inculcate entrepreneurial among them. He is also a Guinness Book of World Record holder for being part of the longest human chain under salt water which was attempted on December 27, 2016.

  • Follow @CNCTimes

Captcha is required.
Sorry Captcha Unsuccessful!!

Latest Blogs

  • 25 March, 2022

    Getting Closer to Launch: Additive Manufacturing for the Quadcopter Mold

  • 25 March, 2022

    Creating low-code solutions with big impacts

  • 24 March, 2022

    The Endless Possibilities of a Sim5x Machine

  • 24 March, 2022

    iMachining: The Revolution in Manufacturing

  • 24 March, 2022

    Your Way or the Swiss Way

  • 24 March, 2022

    SolidCAM- Integration, Association & Education

  • 23 March, 2022

    3D scan and CAD comparisons of large castings

  • 23 February, 2022

    Should You Invest in a Multitasking Machine?

  • 18 January, 2022

    Mastercam CNC machining capabilities for the medical industry

  • 19 April, 2019

    Additive Manufacturing: a big leap in production

  • 11 July, 2018

    Advanced Machining with Industrial Robots.

  • 30 June, 2018

    Global Dimensioning & Tolerancing

  • 14 August, 2017

    Industry 4.0 applications outside

  • 01 August, 2017

    Industry 4.0: Applications in a shop

  • 19 July, 2017

    Industry 4.0 – Machine monitoring

  • 09 June, 2017

    Drill helix angles and their applications

  • 24 May, 2017

    Achieving tolerance less than the accuracy: CNC

  • 17 May, 2017

    Key parts of a CNC fixture

  • 09 May, 2017

    Mohs scale and cutting tools

  • 11 April, 2017

    “OnCreate3D” First Full Cloud CAM app, introduces Stock Definition, modification and use in rouging toolpaths and many more features.

  • 10 April, 2017

    Epoxy granite beds in CNCs

Previous Next

Related Blogs

  • 07 July, 2017

    CNC lathe spindle internals

    Category: Accessories

Showroom

  • 20 April, 2020

    magnetic chuck SMP series

    Category: Accessories
  • 29 March, 2017

    Toolholders & Angle Head

    Category: Accessories
  • 29 March, 2017

    Toolholders & Angle Head

    Category: Accessories
  • 24 March, 2017

    SHINE

    Category: Accessories
  • 18 March, 2017

    CNC Tool Holder Storage Solutions

    Category: Accessories
  • 18 March, 2017

    Tool Holder storage Solutions

    Category: Accessories
  • 30 December, 2016

    MANLON

    Category: Accessories
  • 30 December, 2016

    MANLON

    Category: Accessories

TESTIMONIALS VIEW MORE

By Niraj M Wanikar, Chief Editor, CNCTimes.com, 2019-11-19 17:57:22We would like to express our sincere appreciation for your service to us.You have provided us best marketing platform through CNCTime...

Mr.Adil Atar, Ass.Mng.Technical Sales & Service: Precision Machinekraft

By Niraj M Wanikar, Chief Editor, CNCTimes.com, 2016-10-21 09:00:00Dedication and determination is key to success and CNC Times team is evident to it - FARO Business Technologies (I) Pvt Ltd

Ms. Amrita Gokhale , FARO Business Technologies

By Niraj M Wanikar, Chief Editor, CNCTimes.com, 2016-08-25 00:00:00Seminar was really very good, please let us know about future seminars. we would like to attend the seminar on "Machining of the mate...

Roshan Deshmukh, Design Engineer - Ashvini Magnets Private Limited

FOLLOW US

TECHNOLOGY FOCUS

    Machine Tools

    • CNC Lathe
    • Boring Machines
    • Drilling Machines
    • Spark Erosion
    • Wire Cut
    • Vertical Machining Centers - VMC
    • Horizontal Machining Centers - HMC
    • Grinding Machines
    • Gear Cutting Machines
    • Additive Manufacturing - RP
    • Multi-Axis Machines
    • Multi-Tasking Machines
    • Welding Machines
    • Presses
    • Laser Cutting
    • Others
    • IIoT

    Metrology

    • CMM
    • VMM ( Vision Measuring Machines )
    • PCMM ( Portable CMM )
    • Measuring Instruments
    • Probing Technology
    • 3D Scanners
    • Roundness Measurement
    • Surface Roughness Measurement
    • Contour Measuring Machines
    • Others

    Accessories

    • Workholding
    • Toolholders
    • Spindles
    • Coolants
    • Others

    Software

    • CAD
    • CAM
    • CAE
    • ERP
    • Inspection Software
    • Reverse Engineering Software
    • MES
    • Others

    Mechatronics

    • Robotics
    • Automation
    • CNC Controllers
    • Others

    Cutting Tools

    • Turning Tools
    • Milling Tools
    • Grinding Wheels
    • Drilling
    • Others

INDUSTRY VERTICALS

  • General
  • Automotive
  • Aerospace
  • Healthcare
  • Healthcare Engineering
  • FMCG
  • Consumer Durable
  • Defence
  • Electronics
  • Oil & Gas
  • Heritage
  • Heavy Engineering
  • Die & Mold
  • Plastic
  • Footwear
  • Jobshop

PROFILE

  • About us
  • Contact us

Terms of use

  • Privacy Policy
  • Payment Policy
  • Refund Policy
  • Terms and Conditions

Follow us on:

Download CNCTimes App:

Play Store
2022 © www.cnctimes.com  | Payment Policy   |   Terms and Conditions
Developed & Maintained by Deven Infotech