While creating another creation, I needed a sander. Having brought her into the light of day, it turned out that she was not half-dead. We take on the task of repairing it at home.
So, we have what looks like a Chinese grinder. Even though I got it cheap, it’s still a pity to throw it away. Due to intensive use, the following symptoms appeared: when turned on, the noise increased, some uncharacteristic rattling appeared, the power decreased, and then jamming began.
Let's start to sort it out. Unscrew all the screws from the cover,
And from the sanding pad.
We rent the site.
We remove the casing.
Apparently, it was broken from work seat engine. And when voltage is applied, the rotor warps and jams.
We take measurements from the seat.
We cut out gaskets from pressed steel. We place it on one side of the casing.
Note the position of the bushings. This is very important, otherwise you will suffer during assembly.
Carefully, so as not to damage the brushes, remove the engine.
Insert the gasket symmetrically. We carefully put everything back together. Make sure that the bushings fit into the grooves. We put on the casing. We tighten it with screws. Let's check.
Changes can already be felt in better side. The motor rotates the shaft without any problems. No jamming is observed. We assemble and attach the sanding pad.
We check again - excellent! Now you can continue creating!
Detailed photo report on replacing the bearing of the input shaft of the gearbox of an 800W belt grinder.
While the grinder was operating, without any extraneous sounds, the engine speed increased sharply and the belt stopped.
To determine the malfunction, it is necessary to unscrew the three screws of the drive belt cover.
After dismantling the cover, the following picture was revealed:
The drive belt melted instantly due to a malfunction of the grinder gearbox. The primary shaft of the gearbox (with a large pulley) rotated easily by hand, but sometimes braked sharply.
To disassemble the grinder gearbox, you need to unscrew the screw in the center of the large pulley. Hold the pulley with pliers.
Attention! The screw has a left-hand thread!
After unscrewing the screw, unscrew the pulley, holding the shaft by the dust extraction fan. The pulley has a regular right-hand thread.
Remove the aluminum fan cover, fan impeller, and the bottom of the plastic fan housing.
The fan housing can be removed with some interference, since it is also the top cover of the grinder gearbox. It houses the seat of the upper bearing of the gearbox input shaft. The upper bearing of the input shaft appeared to be without damage or play. To access the lower bearing, it is necessary to remove the gearbox secondary shaft gear. To do this, remove the retaining ring and gear.
After these operations, remove the input shaft from the lower bearing. In my case, only fragments of the separator remained in the lower bearing; the balls were bunched up in one direction. All that remains of the bearing.
Since the grinder is already more than five years old, it was decided to check and lubricate all the bearings.
To do this, it is necessary to disassemble the tape drive platform. It is necessary to remove the gear fixing pin from the secondary shaft.
Unscrew the three platform mounting screws and the belt position adjustment screw (located on the other side).
Using a wide screwdriver, move the platform along the housing guides. Remove the retaining ring and take out the belt driven roller shaft. The drive roller of the tape is removed from the platform body with some force along with the bearing. Use a sharpened awl to remove the protective caps on the bearings. Bearings are checked for play and smooth rotation and filled with lubricant. I lubricated all the bearings with Litol-24.
Assembly is performed in reverse order.
Don't forget until complete installation platforms in place, - insert the spring of the belt position adjustment screw!
The outer race of the failed bearing was dismantled using narrow-nose pliers with curved ends.
A new bearing was installed in place of the removed race.
After installing the belt drive platform, the gear fixing pin and the gear of the secondary shaft of the gearbox itself were inserted into the secondary shaft of the gearbox. The gear is secured with a locking ring.
After which the gearbox input shaft was installed and lubricant was added.
After these operations, all that remains is to close the gearbox and assemble the dust extraction fan.
Privacy Policy
1. DEFINITION OF TERMS
1.1. The following terms are used in this Privacy Policy:
1.1.1. “Site Administration” - authorized employees to manage the site, acting on behalf of SIENSIPALS LLC, who organize and (or) process personal data, and also determine the purposes of processing personal data, the composition of personal data to be processed, actions (operations), performed with personal data.
1.1.2. “Personal data” - any information related directly or indirectly to the identified to an individual(to the subject of personal data).
1.1.3. “Processing of personal data” - any action (operation) or set of actions (operations) performed using automation tools or without the use of such means with personal data, including collection, recording, systematization, accumulation, storage, clarification (updating, changing), extraction, use, transfer (distribution, provision, access), depersonalization, blocking, deletion, destruction of personal data.
1.1.4. “Confidentiality of personal data” is a requirement for the Organization or other person who has gained access to personal data to comply with the requirement not to allow their dissemination without the consent of the subject of personal data or the presence of another legal basis.
1.1.5. “Site User (hereinafter referred to as User)” is a person who has access to the Site via the Internet and uses the Organization’s Site.
1.1.6. “IP address” is a unique network address of a node in a computer network built using the IP protocol.
1.1.7. “Cookies” are a small piece of data sent by a web server and stored on the user’s computer, which a web client or web browser sends to the web server every time in an HTTP request when they try to open a page on the corresponding site.
2. GENERAL PROVISIONS
2.1. The procedure for enacting and changing the Privacy Policy:
2.1.1. This Privacy Policy (hereinafter referred to as the Privacy Policy) comes into force from the moment it is approved by order of the Heads of the Organization and is valid indefinitely until it is replaced by a new Privacy Policy.
2.1.2. Changes to the Privacy Policy are made on the basis of Orders of the Heads of the Organization.
2.1.3. The personal data privacy policy applies to information that SIENCIPALS LLC (hereinafter referred to as the Organization), as the owner of sites located at the address: site, as well as its subdomains (hereinafter referred to as the Site and/or Sites), can receive from the Site User when filling out A user of any form on the Organization’s Website. The site administration does not control and is not responsible for third party sites that the User can access via links available on the Sites.
2.1.4. The site administration does not verify the accuracy of the personal data provided by the User.
2.2. The procedure for obtaining consent to the processing of personal data and their processing:
2.2.1. Filling out any form by the User on the Site means the Organization gives consent to the processing of his personal data and with this Privacy Policy and the terms of processing of the User’s personal data, since filling out a form on the Site by the User means a conclusive action of the User expressing his will and consent to the processing of his personal data.
2.2.2. In case of disagreement with the terms of the Privacy Policy and withdrawal of consent to the processing of personal data, the User must send an email to: by mail and/or to the postal address of the Organization an application for withdrawal of consent to the processing of personal data.
2.2.3. The User's consent to the use of his personal data may be stored by the Organization in paper and/or electronic form.
2.2.4. The User's consent to the processing of personal data is valid for 5 years from the date of receipt of personal data by the Organization. After the expiration of the specified period, the consent is considered extended for every next five years in the absence of information about its revocation.
2.2.5. Processing of the User’s personal data without their consent is carried out in the following cases:
Personal data is publicly available.
At the request of authorized government agencies in cases provided for by federal law.
The processing of personal data is carried out for statistical purposes, subject to the mandatory anonymization of personal data.
In other cases provided by law.
2.2.6. In addition to personal data, when visiting the Site, non-personal data is collected, since it is collected automatically by the web server on which the site is located, CMS (content management system) tools, and third-party scripts installed on the site. Data collected automatically includes: IP address and country of registration, domain name from which the User navigated to the organization’s websites, visitors’ transitions from one page of the site to another, information that the Visitor’s browser provides voluntarily when visiting the site, cookies ), visits and other data collected by third-party analytics counters installed on the site are recorded. This data is non-personal in nature and is aimed at improving service to the User, improving the usability of the site, and analyzing traffic. This data is collected automatically; the User can prevent the sending of this data by disabling cookies in the browser in which the site is opened.
2.2.7. Procedure for processing personal data:
Only employees of the Organization who are authorized to work with Users’ personal data and who have signed a non-disclosure agreement regarding Users’ personal data may have access to the processing of Users’ personal data.
The list of employees of the Organization who have access to personal data of Users is determined by order of the Heads of the Organization.
Processing of Users’ personal data may be carried out solely for the purposes established by this policy and subject to compliance with laws and other regulations. Russian Federation.
3. SCOPE OF THE PRIVACY POLICY
3.1. This Privacy Policy establishes the obligations of the Site Administration to non-disclose and ensure a regime for protecting the confidentiality of personal data that the User provides when filling out any form on the Site.
3.2. Personal data permitted for processing under this Privacy Policy is provided by the User by filling out the registration form on the Site and includes the following information:
3.2.1. last name, first name, patronymic of the User.
3.2.2. User's contact phone number.
3.2.3. address Email(e-mail).
3.3. Any other personal information not specified above is subject to secure storage and non-distribution, except for the cases provided for in clause 2.5. of this Privacy Policy.
4. PURPOSES OF COLLECTING USER’S PERSONAL INFORMATION
4.1. The Site Administration may use the User’s personal data for the following purposes:
4.1.1. Establishing feedback with the User, including sending notifications, requests regarding the use of the Site, provision of services, processing requests and applications from the User.
4.1.2. Carrying out advertising activities with the consent of the User.
4.1.3. Registration of the User on the Organization's Websites to receive individual services.
4.1.4. Conducting other transactions not prohibited by law, as well as a set of actions with personal data necessary for the execution of these transactions.
5. METHODS AND TERMS OF PROCESSING PERSONAL INFORMATION
5.1. The processing of the User’s personal data is carried out without a time limit, in any legal way, including information systems personal data using automation tools or without the use of such tools.
5.2. In case of loss or disclosure of personal data, the Site Administration informs the User about the loss or disclosure of personal data.
5.3. The site administration takes the necessary organizational and technical measures to protect the User’s personal information from unauthorized or accidental access, destruction, modification, blocking, copying, distribution, as well as from other misconduct third parties.
6. OBLIGATIONS OF THE PARTIES
6.1. The user is obliged:
6.1.1. Provide information about personal data necessary to use the Site.
6.1.2. Update, supplement the provided information about personal data if this information changes.
6.2. The site administration is obliged to:
6.2.1. Use the information received solely for the purposes specified in clause 4 of this Privacy Policy.
6.2.2. Ensure that confidential information is kept secret, not disclosed without the prior written permission of the User, and not sold, exchanged, published, or otherwise disclosed possible ways transferred personal data of the User, except for the cases specified in clause 2.5. of this Privacy Policy.
6.2.3. Take precautions to protect the confidentiality of the User's personal data in accordance with the procedure usually used to protect this type of information in existing business transactions.
6.2.4. Block and/or delete personal data relating to the relevant User from the moment of application or request by the User or his legal representative or an authorized body for the protection of the rights of personal subjects.
7. RESPONSIBILITY OF THE PARTIES
7.1. The site administration that fails to fulfill its obligations is liable in accordance with the current legislation of the Russian Federation, except for the cases provided for in clause 2.5. and 7.2. of this Privacy Policy.
7.2. In case of loss or disclosure of Confidential Information, the Site Administration is not responsible if this confidential information:
7.2.1. Became public domain until it was lost or disclosed.
7.2.2. Was received from a third party before it was received by the Site Administration.
7.2.3. Was disclosed with the consent of the User.
8. DISPUTE RESOLUTION
8.1. Before filing a claim in court regarding disputes arising from the relationship between the Site User and the Site Administration, it is mandatory to submit a claim (a written proposal for a voluntary settlement of the dispute).
8.2. Recipient of the claim within 30 calendar days from the date of receipt of the claim, notifies the claimant in writing about the results of consideration of the claim.
8.3. If an agreement is not reached, the dispute will be referred to a judicial authority in accordance with the current legislation of the Russian Federation.
8.4. The current legislation of the Russian Federation applies to this Privacy Policy and the relationship between the User and the Site Administration.
9. ADDITIONAL TERMS
9.1. The site administration has the right to make changes to this Privacy Policy without the consent of the User.
9.2. The new Privacy Policy comes into force from the moment it is posted on the Site, unless otherwise provided by the new edition of the Privacy Policy.
9.3..