 Delivery Related: |
| 1. Which Branch of Durga to Contact when a customer wants to inquire/order bearings? |
| 2. How soon can Durga deliver any bearings? |
| 3. What is the minimum Order Value and Minimum dispatch values acceptable to Durga Bearings? |
| 4. How do I ensure smooth supplies without any problem? |
Technical Specification: |
| 5. What are the details required by Durga Bearings to send an official quote for the bearings? |
Appearance Related. |
| 6. There is a shining band on the circumference of Outer Dia of the bearing. Is it a used bearing or some manufacturing defect? |
| 7. Some Part of the Bearing (Inner or Outer or Both) is appearing grey in colour. Is it a good bearing? |
| 8. The raceway of a Tapered Roller Bearing cup or the Raceway of a Spherical Roller Bearing Outer, have a Zigzag and Criss Cross finish. Why is it so ? Is it a used Bearing? |
| 9. All the suffix written on the Box does not match with written on the bearing? |
| 10. The basic bearing numbers on the bearing is printed differently on the bearing and
the additional suffix with different fonts and style. Is there some thing wrong with
this bearing? |
| 11. There is uneven / dull finish on the outer race of the High precision Bearing, This
creates a very strong doubt that the subject bearing is used one? |
Preserving the Bearing. |
| 12. When shall I preserve the bearing for use at a later stage? |
Quality Related |
| 13. How can a good quality bearing fail prematurely? |
| 14. What is Guarantee and Warrantee do the products carry when goods purchased from Durga? |
| 15. How do the customers can ensure getting genuine bearings from any supplier? |
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| 1. Which Branch of Durga to Contact when a customer wants to inquire/order bearings ? |
| A. Durga bearings have several branches all over India. Please refer to the map.
Customers from Blue areas of MAP to Contact Zone 1 regional Office at Chennai.
Customers from Green areas of MAP to Contact Zone 2 regional Office at Mumbai.
Customers from Pink areas of MAP to Contact Zone 3 regional Office at Bangalore.
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| 2. How soon can Durga deliver any bearings? |
| A. Durga carries inventory worth several crores. So most of the common items as well
as items where customers have given advance planning, goods are available from
stock. Else the delivery for non standard and large dia bearings could be made
between 3 - 6 months generally.
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| 3. What is the minimum Order Value and Minimum dispatch values acceptable to Durga Bearings? |
| A. Minimum Order Value acceptable is Rs.25000/-.
Minimum Despatch Value acceptable is Rs.10000/- due to documentation and
handling charges. However, in special cases for regular customers, we do not mind
accepting smaller values Orders and dispatches on their request.
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| 4. How do I ensure smooth supplies without any problem? |
| A. We expect our OEM customers to give their estimated yearly demand. This will
help us to negotiate better prices and book the Order in advance with our
principals.
For Maintenance demand, we request the customers to give us their annual
consumption pattern for last 3 years. We will enter into a annual rate contract and
keep the inventory for customers to ensure uninterrupted supplies.
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| 5. What are the details required by Durga Bearings to send an official quote for the bearings? |
A. 1) Correct Bearing No (with all suffix and prefix details). and it's Manufacturers
name.
2) Brand which is acceptable by Customer.
3) Quantity required immediately and annually.
4) Target Price if any.
5) Maximum Delivery period acceptable.
In case of non standard bearings where clear specification is not available, we need
to know the bearing type (i.e Ball bearing or Tapered Roller Bearing or Needle
Roller Bearing), manufacturer name, Dimensions, Supported by Drawing or actual
bearing Sample.
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| 6. There is a shining band on the circumference of Outer Dia of the bearing. Is it a used bearing or some manufacturing defect? |
| A. This is a general doubt among most of the customers that shining band on the
Outer Dia circumference appears due to fitment of the bearing in the housing. But
this is a totally wrong conception. This shining band on the outer Dia appears
while manufacturing of the bearing when the graphite shoes holding the bearing
are little worn out and bearing outer is rotating while grinding the raceways.
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| 7. Some Part of the Bearing (Inner or Outer or Both) is appearing grey in colour. Is it a good bearing? |
| A. This process is called "Black Tempering". To check the physical damage or minor
cracks, a sample lot of bearings from a particular batch are coated with special
chemicals to check any such damages. Such Chemical coating helps in detecting
very minor defects and cracks which can not be detected otherwise. Such colour
has no influence on the quality or tolerance of the bearings. It is nothing but a
standard bearing only.
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| 8. The raceway of a Tapered Roller Bearing cup or the Raceway of a Spherical Roller Bearing Outer, have a Zigzag and Criss Cross finish. Why is it so ? Is it a used Bearing? |
| A. NO ! This is not a fitting mark or bad finish. Infact this is a much higher finish
achieved with a special process to get even a smoother finish than normal. Due to
this finish, the bearings have better life due to minimal friction.
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| 9. All the suffix written on the Box does not match with written on the bearing? |
| A. Since manufacturers produce the same bearing with many variations, sometimes
they do not write certain suffix on the bearing and print the same only the cartoon
box.
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| 10. The basic bearing numbers on the bearing is printed differently on the bearing and
the additional suffix with different fonts and style. Is there some thing wrong with
this bearing? |
| A. In some cases some of the suffix is written on the bearing separately in an
additional process while checking the tolerance /run outs / clearance. If the basic
numbering was already done on the bearing before hand, then the suffix related to
above would be printed on the bearing at later stage and therefore may look
different.
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| 11. There is uneven / dull finish on the outer race of the High precision Bearing, This
creates a very strong doubt that the subject bearing is used one? |
| A. High precision bearings have additional process to ensure very smooth surfaces,
very low axial/radial run outs as well as close boundary dimensions. To achieve
the same, bearing outer races are given super finish some times which in turn
makes them look dull and have uneven finish by naked eye look. But the same
bearing when checked with necessary instruments, found to be much more smooth
and very accurate in size.
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| 12. When shall I preserve the bearing for use at a later stage? |
| A. Keep the bearing in manufacturers original packing and do not touch the bearing
with bare hands. Our hands contain moisture and salt in perspiration. If touched
with bare hands, it would attract rust immediately. However, still if you have to
open the bearings from manufacturers packing for inspection or some other
reasons, please ensure to pack the same once again carefully and make sure that
there is sufficient anti rust lubricant (oil or grease or both) has been applied
properly and the same is wrapped properly with plastic cover or some other
antirust media
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| 13. How can a good quality bearing fail prematurely? |
| A. There are several reasons which makes a high Quality bearing fail even with in an
hour. Some of the most common problems are Improper or wrong selection of
Lubricant, Improper fitment, Entering of fluid or foreign particles into the bearing
raceways, Sudden Jerk Load, Misalignment, Overheating of machine or
surrounding area, Passing of strong electrical current into machine, wrong
selection or preloads, clearance or tolerances.
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| 14. What is Guarantee and Warrantee do the products carry when goods purchased from Durga? |
| A. Durga is authorized distributors for more than 15 Brands of products. All goods
purchased from Durga, carries direct guarantee and warrantee from the original
manufacturer. In case of any quality issues or clarification, Durga will provide
direct contact details of manufacturers for any clarification.
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| 15. How do the customers can ensure getting genuine bearings from any supplier? |
A. 1) Always select a supplier with high reputation.
2) Ask for Proof of Import documents.
3) Insists for getting Modvat for all high value demands.
4) Check for all boundary dimensions as per manufacturers product catalogs.
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