Available in ratings up to 40,000 HP and output speeds up to 20,000 RPM or higher in ratios up to 9:1. Nuttall Gear's design features include heavy cast iron or welded steel housings for strength and rigidity, dynamically balanced precision double helical gears for uniform load distribution, and oversized split sleeve bearings with labyrinth oil seals to insure reliability.

Wichita's Air PTO is powered by our heavy-duty Standard Vent clutch. With large friction areas for high energy starts and an air actuated clutch for remote or automatic control of the PTO.
The air actuated PTO is ideal for your application because:

•	The bearing supported shaft eliminates sideload on the crankshaft
•	The high speed airtube not affected by centrifugal force
•	There are no o-rings or diaphragms to wear out
•	14" and 18" 1, 2 & 3 plate clutches available

CECON units are available with a disconnect feature that provides physical separation of the input and output shafts. This allows maintenance to be performed on the non-energized driver while the disconnect CECON is locked out in the disconnect position.

•	Designed for high-speed, continuous operation
•	View port allows visual confirmation of disconnect/connect status
•	Full-speed testing of isolated equipment prior to reconnection
•	Operates in adverse atmospheres
•	Reduced downtime
•	Long Service Life
•	Minimum maintenance

The Twiflex centrifugal clutch coupling is designed to provide load free starts and smooth acceleration. Ideal for engine drives.

•	Loads are smoothly accelerated giving soft start
•	Reduces shock on shafts and gearing
•	Engine starts and idle free of load
•	Serves as automatic throttle controlled clutch
•	Eliminates shock loads
•	Prevents engine stall under sudden overload
•	Prevents engine reverse swing when coming to rest
•	Limits vibratory torques to safe level
•	Combines advantages of an efficient flexible coupling.
•	100% efficiency saves fuel.
•	Long trouble-free life with no routine maintenance.

Over 678 kNm;
6,000,000 in.lb

Unique diaphragm design permits high-torque density and low weight. Designed for years of dependable, low-maintenance performance.

•	Multiple, separated, convoluted diaphragms allow greatest design flexibilty for most demanding applications
•	API-671 compliant
•	Best for high axial travel requirments

Form-Flex metal disc couplings consist of two hubs, a spacer and two high strength carbon or stainless steel flexible discs. Modified and special designs are commonly supplied to meet specific application conditions. Available in carbon steel, stainless steel or with corrosion resistant coatings.

•	No maintenance
•	Zero backlash
•	Close couple, spacer and floating shaft designs available
•	Easy interchangeability

Over 140 kNm;
1,240,000 in.lb.

Optimized disc profile for even stress distribution. Proprietary disc coating to prevent fretting and corrosion. Designed for years of dependable, low-maintenance performance.

•	Industry leader in power density
•	API-671 compliant
•	Best for reduced moment applications

Up to 600 kNm;
5,300,000 in.lb.

These torsionally stiff, light weight couplings are capable of transmitting high torques at high speeds while accepting significant levels of angular, radial, and axial misalignment. They are easy to install, suitable for hostile environments, require no lubrication and feature a high torque to weight ratio. Specific designs are available which meet the customer’s exact requirements. Standard units are compliant with API 671 (American Petroleum Institute) and ATEX 94/9/EC.

•	No maintenance
•	Standard and reduced moment designs available
•	Capable of being torsionally tuned to suit specific machinery requirements

Up to 180 kNm;
1,600,000 in.lb.

GC Series couplings feature unitized, straight-sided flexible discs for ease of installation. Up-to-date design targeted specifically for heavy industrial applications. These couplings provide increased torque capacity per size by taking advantage of the latest materials and design technologies.

•	Unitized Flex Packs
•	Easier, faster installation
•	Interchangeable with industry standard designs
•	Fewer sizes to cover a full range of applications
•	Reduced spare parts inventory
•	Lower total cost of ownership
•	Special designs avaiable for higher-torque applications

Fully-crowned gear teeth
provide operational benefits
including maximum
load-carrying capacity with minimum size, maximum
reliability and long life.

•	Both “O” ring and metal seal models are available
•	Strong, rigid floating sleeve
•	Precision-machined identical hubs
•	Positive dust-tight seals

Up to 147 kNm;
1,300,000 in.lb.

Fully-crowned gear teeth
provide maximum contact at the strongest part of the tooth.

•	Models available for use on vertical and/or horizontal shafts
•	Bore capacity up to 510 mm
•	High torque to weight ratio
•	Half per half interchangeability