| Belt Driven Grinding, Boring and Milling Spindles
Parker
Majestic has manufactured precision grinding, boring and milling
spindles for over 73 years. Their emphasis on quality, accuracy
and longevity makes Parker Majestic the best choice for your
production needs.
Parker
Majestic specializes in precision box type spindles and
all types of custom designed spindle applications. Over
73 years of design experience gives us the design base and
background to provide you with the optimal spindle solution.
Parker Majestic’s manufacturing and assembly facilities
are geared toward precision spindle manufacture and include
the latest in CNC turning and grinding equipment, a temperature
controlled assembly and inspection area and state-of-the-art
coordinate measuring machines.
Speed
Tapered roller bearings, angular contact ball bearings and tapered bore roller bearings are just a few of the different types of bearing constructions used to optimize our spindles for specific applications. In all cases bearing quality is chosen to match the application requirements. Typically, class 0, ABEC-7 and ABEC-9 quality bearings are used. The speed of a bearing can be measured in "DN" value: the bearing bore in mm x the application RPM. Maximum speeds of over 800,000 DN are obtained using these high quality angular contact ball bearing constructions.
Balance
All Parker Majestic spindles are balanced to laboratory grade
precision. Other rotating components such as pulleys and tool
adapters are independently balanced so that excellent operation
continues after installation of replacement parts. All spindles
are checked for vibration with the latest measuring equipment.
Full inspection reports are provided with each unit shipped.
Capacity
Care is taken in all spindle designs to see that the proper
bearings and shaft sizes are chosen for the speed and load
conditions for your application. Only the highest quality
steels and cast iron are used. With few exceptions all precision
spindle shafts are hardened on all surfaces (not just the
spindle face). Threads are ground! This insures the maximum
rigidity and maintainability for your spindle installations.
Additionally all bearing spacers are rotary surface ground
for superior flatness and parallelism (Parker Majestic supplies
rotary surface grinders for bearing manufacturers’ production
process.)
Special Designs
Parker Majestic has designed thousands of special application
spindles: high dimensionally accurate multiple spindle clusters,
high HP motorized spindles, high speed boring and grinding
spindles, high HP slow speed worm drive spindles, planetary
milling and grinding spindles, high temperature environment
spindles, quill adjustable spindles and many more.
Spindle Lubrication
High speed spindles require special bearing lubrication methods.
Parker Majestic’s patented Micro-injection Lubricator
fulfills these needs. This state-of-the-art air/oil lubrication
system injects precise amounts of oil at controlled intervals
for optimal bearing life and minimum heat generation. In addition
the high air pressures used provide maximum protection against
contamination of the spindle.
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