Sanprem was established in 1986 by Mr.Ashok Kumar and has attained a
remarkable achievement as a supplier and distributor of CNC Turning Centres,
Rotary Index Tables, CNC Chucking Systems, Collets, Collet Chucks, Live
Pratt Burnerd International has a worldwide reputation for its
exceptional ability to design innovative, cost effective solutions to
complex workholding problems and are established as one of the
foremost global manufacturers of chucking systems.
A capable and substantial team of design engineers have
established a reputation for developing simple-to-use, cost effective
workholding systems - no production problem is too difficult, no task
beyond their reach.
Pratt Burnerd Chucks
Make the Impossible - Possible
The outstanding capabilities of the designers, combined with the latest manufacturing
technology and the highly skilled workforce, ensures that every customer receives a
second-to-none service however complex the workholding application.
Pratt Burnerd manufactures a comprehensive range of standard and power scroll chucks up to
1m, independent chucks, three and four jaw chucks as well as the innovative Programmable
Power Chuck (PPC) and the Self-Contained Power Chuck (SPPC) for a wide variety of industries
including automotive, motor sport and aerospace as well as general engineering.
1. MANUAL CHUCKS
Pratt Burnerd has an extensive range of multijaw manual chucks manufactured from the highest
quality materials. Products include:
•Standard accuracy chucks have bodies manufactured from high quality SG iron with
component parts manufactured from high quality alloy steel and heat treated for optimum
performance and durability.
•Super precision chucks have a repeatability of 0.03mm TIR guaranteed. A wide range of chuck
adaptors is available to meet most spindle noses. Hardened base and reversible top jaws are
available as an option.
•6 jaw Griptru chucks allow the gripping of thin walled components with minimum distortion. A
proven micro adjustment device on both 3 and 6 jaw chucks permits concentricity to be
adjusted to within 0.005mm TIR.
•The all-steel Setrite chuck, supplied with hardened base and reversible top jaws, gives a
concentricity of 0.013mm TIR by using the Setrite adjustment feature. All scrolls are hardened
and ground for optimum accuracy and durability.
•The Metric Independent chuck is manufactured from SG iron and is the most economical
chuck for turning one-off components and short runs. All screws, bearings and reversible jaws
are manufactured from steel.
•Large 3 jaw scroll chucks can be supplied with recess mount or finished to suit most spindle
noses and also offered with a large bore. Hardened base and reversible top jaws are an option.
•The Large Independent 4 jaw chuck has body, screws, bearings and jaws manufactured from
high quality steel. It can be machined with mounting holes and recess to suit the spindle nose.
1. Manual Chucks
2. Power Chucks
2. POWER CHUCKS
Pratt Burnerd Lathe Chucks range
Pratt Burnerd manufacture a wide range of high technology and extremely accurate Power
chucks that are sold worldwide, including:
•High Speed Quick Change with Setrite feature as standard, giving a repetitive gripping
accuracy of 0.025mm TIR. Designed for small batch production on CNC lathes.
•International chuck has a repetitive gripping accuracy of 0.025mm TIR and fitted with Setrite
as standard and is designed specifically for use on CNC lathes.
•Self contained power chucks can either have a built in air cylinder actuated through an
interlocked control unit, or they can be interfaced directly from the lathe’s own control
system. These chucks are ideally suited to machines which do not have hydraulics fitted.
•The high speed low cost replacement chuck has been designed as a low cost, easy retrofit
replacement for manufacturers’ own chucks. Accuracy is 0.025mm TIR.
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