Chicago Pneumatic CP835

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To reduce risk of injury, everyone using, installing,

repairing, maintaining, changing accessories on, or

working near this tool must read and understand

these instructions before performing any such task.

Air Supply Requirements

1. Supply tool with 90 psig (6.2 bar) of clean, dry air. Higher pressure drastically

reduces tool life.

2. Connect tool to air line using pipe, hose and fitting sizes shown in the diagram

on page 12.

Lubrication

Use an air line lubricator with SAE #10 oil, adjusted to two drops per minute. If

an air line lubricator cannot be used, add air motor oil to the inlet once a day.

Die Adjustment

Loosen clamp nut (9), rotate die (8) aligning slot with pin (4) at desired position.

Tighten clamp nut before operating tool.

Noise & Vibration Declaration*

Vibration value < 2.5 m/s , re. ISO 8662-1.

Maintenance

1. Disassemble and inspect parts every three months if the tool is used every

day. Replace damaged or worn parts.

2. High wear parts are underlined in the parts list.

Punch Replacement

Remove clamp nut (9) and die (8). Loosen set screw (6) and remove punch.

Reverse procedure to install new punch.

*These declared values were obtained by laboratory type testing in compliance with the stated standards and

are not adequate for use in risk assessments. Values measured in individual work places may be higher than

the declared values. The actual exposure values and risk of harm experienced by an individual user are

unique and depend upon the way the user works, the workpiece and the workstation design, as well as upon

the exposure time and the physical condition of the user. We, Chicago Pneumatic, cannot be held liable for

the consequences of using the declared values, instead of values reflecting the actual exposure, in an

individual risk assessment in a work place situation over which we have no control.

Sound pressure level 93.0 dB(A) in accordance with Pneurop 8N-1. For sound

power, add 10 dB(A).

Models "B" & "L"

CA155761 Rev. E

CP835 Air Nibbler

We, Chicago Pneumatic Tool Company, 1800 Overview Drive, declare under our sole

responsibility that the product to which this declaration relates, is in conformity with the

requirements of the Council Directive of June 1989 on the approximation of the laws of the

Member States relating to machinery (89/392/EEC).

Machine Name CP835 Air Nibbler

Machine Type Power tool equipped with a punch and die for use in cutting sheet metal -

No other use is permitted.

Serial No. Tools with No. 94200M or higher

Technical Data

Punch diameter .177 in. (4.5 mm)

Cutting speed in .040 in. (1 mm) Steel 6.2 in. (157 mm/min.)

Free speed 2750 SPM

Air pressure 90 psi (6.2 bar)

Air consumption 4 cfm

Harmonized Standards Applied EN292

National Standards Applied ISO 8662-1, Pneurop 8N-1

Name and Position of Issuer W. A. LeNeveu, President, Chicago Pneumatic Tool

Company

Signature of Issuer

! Avoid direct contact with accessory and work surface during and after

work.

! Cutting edges and saw blades can become hot during use. Do not

touch.

! Never force the tool to cut faster or through heavier gauge material than

rated capacity.

! To prevent damage to the tool and accessory, accessory must be held

firmly against work surface while cutting.

Workplace Hazards

! Slip/Trip/Fall is a major cause of serious injury or death. Be aware of

excess hose left on the walking or work surface.

! High sound levels can cause permanent hearing loss. Use hearing

protection as recommended by your employer or OSHA regulation (see

29 CFR part 1910).

! Maintain a balanced body position and secure footing.

! Repetitive work motions, awkward positions and exposure to vibration

can be harmful to hands and arms. If numbness, tingling, pain or

whitening of the skin occurs, stop using tool and consult a physician.

! Avoid inhaling dust or handling debris from the work process which can

be harmful to your health. Use dust extraction and wear respiratory

protective equipment when working with materials which produce

airborne particles.

! Proceed with care in unfamiliar surroundings. Be aware of potential

hazards created by your work activity.

! Some dust created by power sanding, sawing, grinding, drilling and

other construction activities contains chemicals known to the State of

California to cause cancer and birth defects or other reproductive harm.

Some examples of these chemicals are:

- Lead from lead based paints

- Crystalline silica bricks and cement and other masonry products

- And Arsenic and chromium from chemically-treated rubber

Your risk from these exposures varies, depending on how often you do

this type of work. To reduce your exposure to these chemicals: work in a

well ventilated area, and work with approved safety equipment, such as

dust masks that are specially designed to filter out microscopic particles.

Additional Safety Topics

! This tool and its accessories must not be modified.

! This tool is not intended for use in an explosive atmosphere and is not

insulated for contact with electric power sources.

! Operators and maintenance personnel must be capable of handling the

power of the tool and performing the job task.

! For professional use only

The goal of Chicago Pneumatic is to produce tools that help you work safely and

efficiently. The most important safety device for this or any tool is YOU. Your

care and good judgment are the best protection against injury. All possible

hazards cannot be covered here, but we have tried to highlight some of the

important ones.

Air Supply and Connection Hazards

! Air under pressure can cause severe injury.

! Always shut off air supply, drain hose of air pressure and disconnect

tool from air supply when not in use, before changing accessories or

when making repairs.

! Never direct air at yourself or anyone else.

! Whipping hoses can cause serious injury. Always check for damaged or

loose hoses and fittings.

! Do not use quick disconnect couplings at tool. See instructions for

correct set-up.

! Whenever universal twist couplings are used, lock pins must be

installed.

! Do not exceed maximum air pressure of 90 psi/6.2 bar or as stated on

tool nameplate.

Projectile Hazards

! Always wear impact-resistant eye and face protection when involved

with or near the operation, repair or maintenance of the tool or changing

accessories on the tool.

! Be sure all others in the area are wearing impact-resistant eye and face

protection.

! Even small projectiles can injure eyes and cause blindness.

Operating Hazards

! Always shut off air supply, relieve hose of air pressure and disconnect

tool from air supply when changing accessories.

! Cutting with these tools will create sharp edges. Wear gloves to protect

hands.

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Summary

Instruction Manual

Air Supply Requirements

Details tool's air supply needs, lubrication, die adjustment, noise/vibration, and maintenance procedures.

Safety Instructions

Comprehensive safety guidelines covering air supply, projectiles, operation, workplace hazards, and additional topics.

Parts List

Air Supply Diagram

Illustrates the correct air line connections and fittings for the tool.

Summary

Instruction Manual

Air Supply Requirements

Details tool's air supply needs, lubrication, die adjustment, noise/vibration, and maintenance procedures.

Safety Instructions

Comprehensive safety guidelines covering air supply, projectiles, operation, workplace hazards, and additional topics.

Parts List

Air Supply Diagram

Illustrates the correct air line connections and fittings for the tool.

The Chicago Pneumatic CP835 Air Nibbler is a power tool designed for cutting sheet metal. Its primary function is to efficiently and precisely cut through various gauges of sheet metal, making it suitable for professional use in environments where such tasks are common. The tool operates on a pneumatic system, requiring a clean and dry air supply to function optimally.

Function Description

The CP835 Air Nibbler utilizes a punch and die mechanism to cut sheet metal. The punch rapidly reciprocates, creating small, overlapping cuts that effectively remove material along a desired line. This nibbling action allows for intricate cuts and curves that might be difficult to achieve with other cutting methods. The tool is specifically designed for cutting sheet metal and should not be used for any other purpose to ensure safety and prevent damage.

Usage Features

To operate the CP835 Air Nibbler, it must be connected to an air supply providing 90 psig (6.2 bar) of clean, dry air. Maintaining the correct air pressure is crucial, as higher pressures can drastically reduce the tool's lifespan. The air line connection should adhere to the specified pipe, hose, and fitting sizes to ensure proper airflow and prevent leaks.

Lubrication is an important aspect of the tool's operation. An air line lubricator with SAE #10 oil, adjusted to two drops per minute, is recommended. If a lubricator cannot be used, air motor oil should be added to the inlet once a day. This ensures the internal components, particularly the motor, remain well-lubricated, reducing wear and extending the tool's operational life.

The die adjustment feature allows users to fine-tune the cutting mechanism. By loosening the clamp nut, the die can be rotated to align its slot with a pin at the desired position. Once adjusted, the clamp nut must be tightened before operation. This adjustment capability ensures precise cutting and accommodates different cutting requirements.

During operation, it is essential to maintain a balanced body position and secure footing to prevent slips, trips, and falls, which are major causes of serious injury. The tool's cutting edges and saw blades can become hot during use, so direct contact with the accessory and work surface should be avoided during and after work. Users should never force the tool to cut faster or through heavier gauge material than its rated capacity, as this can damage both the tool and the accessory. To prevent damage, the accessory must be held firmly against the work surface while cutting.

The tool generates noise during operation, and high sound levels can cause permanent hearing loss. Therefore, hearing protection, as recommended by employers or OSHA regulations, should always be used. Repetitive work motions, awkward positions, and exposure to vibration can be harmful to hands and arms. If symptoms such as numbness, tingling, pain, or skin whitening occur, users should stop using the tool and consult a physician.

The cutting process can create sharp edges on the sheet metal, so wearing gloves to protect hands is recommended. Additionally, the tool's operation can generate dust and debris, which may be harmful to health. Users should employ dust extraction methods and wear respiratory protective equipment when working with materials that produce airborne particles. Awareness of the work environment is crucial, especially in unfamiliar surroundings, to identify and mitigate potential hazards created by the work activity.

Maintenance Features

Regular maintenance is key to the longevity and safe operation of the CP835 Air Nibbler. For tools used daily, disassembly and inspection of parts should be performed every three months. Any damaged or worn parts should be replaced immediately. High-wear parts are specifically identified in the parts list to guide users on components that require more frequent attention.

Punch replacement is a straightforward process. It involves removing the clamp nut and die, loosening a set screw, and then removing the punch. The new punch is installed by reversing these steps. This ease of replacement ensures that the cutting performance can be maintained over time without extensive downtime.

Before performing any maintenance, changing accessories, or making repairs, the air supply to the tool must be shut off, the hose drained of air pressure, and the tool disconnected from the air supply. This prevents accidental activation and ensures user safety. Air under pressure can cause severe injury, and whipping hoses due to damaged or loose connections can also be dangerous. Therefore, all hoses and fittings should be regularly checked for damage. Quick disconnect couplings should not be used at the tool, and if universal twist couplings are employed, lock pins must always be installed.

The tool and its accessories must not be modified, as this can compromise its safety and performance. The CP835 Air Nibbler is not designed for use in explosive atmospheres and is not insulated for contact with electric power sources. Operators and maintenance personnel must be capable of handling the tool's power and performing the job tasks safely and effectively.