WCRT-CRW – Automatic Rotary Arm Stretch Wrapper

Wulftec was the first in North America to put AC variable frequency drives as standard equipment on all machines. Why? Lower maintenance and better reliability—Wulftec stretch wrappers will save time and money

NEMA 4/12 control panel dust tight and waterproof

The control panel is neatly organized eliminating time otherwise lost searching for wires

The control panel is UL508A approved

Superior Electrical/Electronic Design including Allen Bradley MicroLogix PLC and AC drives

User friendly touch screen offers a simple yet effective way to adjust and maintain your equipment

All motors, proximity sensors, photoeyes and other sensors have quick disconnect cables that simplify installation and maintenance

All Wulftec structures are made of heavy-duty steel for rugged performance, even in the harshest work environments. They’re built to last forever

Robust 3-legged design for optimal stability and less stress on the frame

A 25″ ring gear with pinion gear drive provides the strongest drive in the industry and is warranteed for 10 years.

Dual chain driven for balanced movement & no vibration

Our heavy duty conveyors are second to none in the industry

The “Maintenance Free” spring loaded carriage gate equipped with spring loaded rollers, ensures optimal contact with the stretch film year after year, without involving maintenance

Wulftec is the only manufacturer to offer a LIFETIME warranty on its pre-stretch rollers’ blue compound.

Preset pre-stretch ratios are available from 50-300%

The angled carriage with very low wrap possibility, the product is properly secured to the pallet, resulting in a pallet that is more stable for transport, and therefore less damage

No film threading is required and a Lexan cover eliminates operator’s ability to reach rollers when gate is closed

The pneumatically operated cut and wipe-on system automatically cuts and wipes the film onto the load upon cycle end

A vertical roller positions the film over the clamp which grabs the film; this ensures longer heat wire life expectancy

Then the heat wire swings in and cuts the film

A timed impulse heat control, allows quick cool down so the heat wire becomes cold to the touch within 5 seconds

Wulftec’s revolutionary drop away clamp ensures clean film release from the pallet load

Benefit from our splash proof program with the top cover pause

Non-Proprietary parts accessible on a local base

The best warranties in the industry

4-year unlimited cycle warranty

lifetime warranty on prestretch rollers

10-years on the steel structure and ring gear

Production Rate

100 loads per hour

Maximum Load Weight

5000 lbs

(6000 lbs*)

Maximum Load Size

48″ L x

48″ W x

80″ H

Machine Dimensions

138″ L x

148″ W x

140″ H

Approximate Shipping Weight

4500 lbs

Electrical Requirements

230 V /

3 ph /



Pneumatic Requirements

3 cfm @

80 psi


NEMA 4/12 control cabinet with quick disconnect

Allen Bradley monochrome Touch Panel

Double brush dust tight slip ring

Alarm beacon light

Allen Bradley SLC 5/03 PLC

24V control system

Current overload protection

Sick autoheight sensing photoeye with on/off mode

Power On/Off lockable switch and indicator light

230VAC Motors with AC variable frequency drives

Two emergency stop stations (1 on panel / 1 in wrap zone)

Manual function for rotation fwd/rev and carriage up/down

Variable rotary arm speed (17 RPM other speeds available*)

Intuitive alarms diagnostic

Cycle counter

Reset function

Separate top and bottom wrap selections (0-9)

Separate up and down carriage speeds

Film force to load control

All conveyors with independent fwd/rev manual function

Manual clamp jog

Dynamic braking system for rotary arm with AC drive

120 VAC outlet in control panel for service work

1 HP 230VAC Motor & AC variable frequency drive


Film Delivery System

Lifetime warranty on pre-stretch rollers’ blue compound

20″ NO-THREAD® Powered Pre-Stretch Carriage

Film force release for easy pull at start and end of cycle

50-300% pre-stretch ratio (preset to customer specs-std 200%)

Electronic film tension control with analog sensor

Sensing device for film out/broken with visual alarm

Lexan roller cover for operator safety

Film Carriage Drive

Emergency stop for arm path obstruction

Angled carriage to wrap approx. 2″ from conveyor level

1 HP AC motor with Allen Bradley variable frequency drive

Two #50 carriage lifting chains

Dual steel supporting boom

Power track for efficient guiding of wires

Machined UHMW-PE carriage glides on 1/2″ CRS rails

Film Tail Treatment

Film alignment arm

Automatic film clamping device

Pulsed controlled cutter

Brush-on film tail treatment

(Heat Seal treatment optional*)

Rotary Arm Drive

1 HP AC motor with Allen Bradley variable frequency drive

25″ Heavy duty Ring GEAR Bearing, with Pinion GEAR Drive

Heavy duty structural steel construction: easy access to all components

Counter-balanced rotary arm for smooth rotation

17 RPM variable speed (up to 35 RPM)

Safety fencing with security door

Automated remote lube station

Dual steel boom rotary arm

Electronic soft start/stop

Positive arm alignment controlled by “Proximity Sensor”

Dynamic braking system for rotary arm with AC drive

Protective guard covering ring gear



4 — 6″ X 6″ floor mounting legs

Free standing integrated leg design

Safety Features

The Wulftec wrapping system is equipped with 5 photoeyes which monitor access points to wrapping zone and prevent accidental insertion of foreign object during wrapping

2 E-Stop mushroom type push buttons: 1 on control panel, and 1 in wrapping zone

Additional E-Stop are available upon request

Wrapping zone enclosed by heavy-duty personnel obstruction fencing. Complete with electronically interlocked access door

An object obstruction safety device stops the machine functions should there be any interference in the wrapping area

Technical Information

The machine is provided with a manual including electro/mechanical schematics and drawings, maintenance program and PLC program disk


3-year unlimited cycle warranty

10-year warranty on steel structure

10-year warranty on 25″ ring gear bearings

Lifetime warranty on pre-stretch rollers’ blue compound