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V. R. Engineers V. R. Engineers - 2 - 3.imimg.com
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1 V. R. Engineers- 09393771431 V. R. Engineers Hyderabad 2 V. R. Engineers- 09393771431
Transcript of V. R. Engineers V. R. Engineers - 2 - 3.imimg.com
1V. R. Engineers- 09393771431
V. R. Engineers
Hyderabad
2V. R. Engineers-09393771431
Profile
We are the manufacturers and importers of Complete Range Electro-
mechanical products like Bearings, Load cells, Load Cell
Indicators/Controllers, Stepper Motors, PM Motors, PMDC Motors, BLDC
Motors, AC Induction/Geared Motors, Synchronous Motors, Motor Drives,
Instrument Cooling Fans, PLC, SMPS, Sensors, Solenoids, Dowel pins &
Complete Range Of Engineering LAB Equipments etc.
Our Manufacturing Principles are from Germany, Taiwan, Korea, China and
India. We are also importing the goods from established manufacturing
facilities.
3V. R. Engineers
Profile
We have technical tie-ups with local and overseas manufacturers for Design,
Development and Marketing of latest Technology Products. Our warehouse unit is
well equipped for maintaining the product Quality & Durability.
All our products are manufactured using Innovative Technology and Latest
Equipments. Used in various applications our products can also be customized as
per Customer Specifications. We work on ODM (Original Design Manufacturers)
Concept and get the products manufactured as per Customer requirements and add
the value to the End Products
We have a vast Clientele in India for our product which includes OEMS & After
Market End-users.
4V. R. Engineers
Products offered
6V. R. Engineers.
Industrial Products
PAB- Bearings
We are manufacturers, Importers and suppliers of
complete range of Application Specific (Precision
Application) PAB- Bearings, for Original Equipment
Manufacturer's (OEM) and After Market(Replacement)
** All the PAB Bearings are Manufactured AS per(SAE-52100 material)SAE - Society of Automotive Engineers, a trade and standards organization. .
12V. R. Engineers
10/04/12 Miracle Softwares
**LN=Low Noise : L21-Shell Alvania Grease
PAB-Bearing abbreviations
Plain -- No Shield
Type Z -- One Shield (normally will have metal shields)
Type 2Z -- Two Shields (one on each side)
Type RS1 -- One Seal (normally the R indicates rubber)
Type 2RS1 --Two Seals (one on each side)
RZ: Low friction seal of synthetic rubber with sheet steel reinforcement on side of the bearing.
2RZ: RZ seals at both sides of the bearing.
ZN: Z shield (non-contact type) at one side of the bearing.
ZNR: as ZN, but with snap ring.
2ZNR: As2ZN but with snap ring
CD -- 15 degree contact angle (for angular contact)
ACD = 25 degree contact angle (for angular contact)
N: Snap ring groove in outside cylindrical surface of the outer ring
NR: As N, but with snap ring.
The bearings can also have a C2, C3, C4 or C5 designation after the bearing
Number. This indicates that the internal fit (the inner race to ball to outer
Race) is not standard. If your bearing has one of these designators, make sure
You get a bearing with the same designator. A C2 is less than standard
Clearance, while a C3, 4, and 5 are larger than standard.
If anybody has a set of old bearings and can mic them up (ID, OD and width) I
can cross reference them to a standard bearing number.
Internal Clearance
The bearing internal clearance as the total distance through which one bearing ring can be
removed relative to the other under zero measuring loads. Movement in the radial direction is
called radial internal clearance. Axial movement, axial internal clearance. The internal
clearance is standardized.
Rolling bearings are delivered with different clearance. The internal clearance will vary from
bearing to bearing type. The most common clearance is NORMAL (with no suffix).
C1=> bearing internal clearance smaller than C2
C2=> bearing internal clearance smaller than normal
C3=> bearing internal clearance greater than normal
C4=> bearing internal clearance greater than C3
C5=> bearing internal clearance greater than C4
Why Internal Clearance
1) In order to fit a bearing tightly on a shaft it is necessary that the shaft is slightly larger than
the bore of the inner ring. When the bearing is mounted, the inner ring will be expanded
and consequently the space available for the rolling elements will be reduced. The
reduction in space available for rolling elements, when the bearing is mounted
accommodated by internal clearance.
2) Steel will expand with increased temperature. In operation the temperature various parts
of a bearings will not remain uniform and resulting in varying degrees of expansion,
which is compensated by the internal clearance required is dependent up on the
mounting fit and the operating conditions. In case of doubt a bearing with greater
clearance shall always be selected.
Bearing Tolerances
The dimensional running tolerances for bearings are standardized and divided into different
classes of accuracy by ISO Standard cover closer tolerances e.g., classes 6 and 5(
corresponding PAB tolerances are designated P6 and P5).For specific applications such as
machine tool spindles. VRE manufactures bearings of even greater accuracy (tolerances classes
P4, SP and UP)..
Bearings Lubrication
There are three reasons why it is necessary to lubricate bearings.
1) To prevent inter metallic contact between the rolling elements, raceways and cages.
2) To protect against corrosion.
3) To reduce wear
Under normal operating conditions, bearing can generally be lubricated with grease. But
some designs require oil lubricant may even be used. In general the free space in the
bearing and housing should only be partly filled with grease (30 to 50%).
Lubricating properties deteriorate with time as result of mechanical working and ageing.
Consumed or contaminated lubricant must therefore be replenished or changed from
time to time (“Re-Lubrication Interval al”
,”oil change”)
Our Clients
Clients List:
1. Bharath Dynamics Ltd(BDL)
2. Defence Research Development
Lab(DRDL)
3. Electronic Corporation of India
Ltd.(ECIL)
4. HBL Power Systems Ltd.
5. GMR Group
6. Sagar Asia
7. Ace Engg College
8. Anurag college of Engg & Tech
9. Axiom Energy Conversion Pvt. Ltd
10. Priyadarshini Spinning Mills ltd.
11. Andhra Electronics Ltd.
12. Servomax
13. Masquati Dairy Products.
14. Mother Dairy
15. Balaji Dairy
16. Wire Link Industries
17. Sri Balaji Motors
18. BITS Pilani
19. IIT Mumbai
20. IIT Khragpur
21. IIT Varanasi
22. JNTU,HYD.
23.SV University,Tirupathi
24. AP DAIRY , HYDERABAD.
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