Nook Industries provides a
complete selection of inch and metric Ball Screws, Roller Screws, Acme Screws,
Lead Screws, End Bearing Supports, Precision Locknuts, Worm Gear Screw Jacks,
Electric Actuators, HRC 60 Linear Shafting, Linear Bearings and Pillow Blocks
to the Linear Motion Industry.
ActionJac™
LinkJac™ Line Shafting is used to interconnect the input shafts
of ActionJac™ Worm Gear Screw Jacks used in a multiple arrangement.
The shafts transfer the torque from the motor to the jack or from
jack to jack.
Nook Industries LinkJac™ Line Shafting is
made from steel and is available in standard lengths up to 144".
Custom end machining and other diameters are available, contact
Nook Industries for information.
SELECTION: There are two major concerns when
selecting interconnect shaft:
Critical Speed: How fast will the shaft be turning?
Torque: How much load will the shafts be carrying?
The two characteristics of a LinkJac™ Line
Shaft which can be varied to accommodate these requirements are:
Length of the shaft
Diameter of the shaft
When selecting a LinkJac™ Line Shaft, use
the largest diameter or shortest length which satisfies both of
the following equations. If you know length and operating speed
of the shaft:
WHERE: L = length
of unsupported shaft in inches
N = operating speed in revolutions per minute
If you know the torque to be transmitted and the length of the
shaft:
WHERE: T = torque
in inch-pounds
L = total length of shaft in inches
DESIGN INFORMATION:
The length used in the Speed-Length-Diameter Calculation is
the supported length of the shaft. If support bearings are used
on the shaft, the length is the longest unsupported length between
bearings.
The formulas above give a theoretical value of critical speed.
Alignment, straightness and stiffness of the system all contribute
to determining the actual value.
The formula used for finding minimum diameter when torque and
length are known is based on an allowable twist of 1°. Restricting
the twist allows for better synchronization of ActionJac™ motion
The torque in the system is also limited by the torque capacity
of the coupling.
Allow 1/8 inch spacing between the jack input shaft and the
LinkJac™ shaft inside the coupling
For some combinations of couplings and jacks, the radius of
the suggested coupling is larger than the distance from the center
of the worm shaft to the base.
Nook Industries offers a range of couplings for use with LinkJac™
and ActionJac™ products in both floating shaft and supported shaft
applications.
Nook Industries awarded a spot on Network World's 2005 Enterprise All-Star list. Nook was selected for its CAD model web tool that lets customers configure and download products
instantaneously.
Nook Industries website reviewed in a MarketingSherpa Case Study. NookIndustries.com receives recognition for the usability of its website and 2D/3D CAD Model Library.
NOOK INDUSTRIES, INC. - An ISO 9001:2000 Registered Company
4950 East 49th Street | Cleveland, Ohio 44125 | phone: (216) 271-7900
or (800) 321-7800 | fax: (216) 271-7020
