JET 1/2-inch Pneumatic Drill
Model: JCT-5670 (#550670)
Operation & Parts Manual
Edition 3, 11/2018
Manufactured by JET, a division of JPW Industries, Inc.
Address: 427 New Sanford Road, LaVergne, TN 37086
Phone: 800-274-6848 | Website: www.jettools.com
Safety Warnings
General Air Tool Warnings
- Read and understand this entire manual before attempting assembly or operation.
- Read and understand all warnings posted on the tool and in this manual. Failure to comply with all of these warnings may cause serious injury.
- Replace warning labels if they become obscured or removed.
- Do not use this tool for other than its intended use. If used for other purposes, JET disclaims any real or implied warranty and holds itself harmless from any injury that may result from that use.
- Always wear ANSI Z87.1 approved safety glasses or face shield while using this tool. (Everyday eyeglasses only have impact resistant lenses; they are not safety glasses.)
- Wear ear protectors (plugs or muffs) if the noise exceeds safe levels.
- Wear gloves and protective clothing if operation produces sparks or flying particles. Gloves should be tight-fitting, without frayed fingers or hanging threads. Keep hands and body away from the working area of tool.
- Do not operate an air tool continually at full throttle without a work load on the tool.
- The air tool must be properly lubricated before operating.
- Never start a percussion type air tool (chipper, breaker, buster, etc.) without securing the tooling in the retainer and placing the tip against the work surface.
- Do not operate air tool without its guards in place. Do not modify the tool.
- Do not operate this tool while tired or under the influence of drugs, alcohol, or any medication.
- Adopt a comfortable posture with proper balance, and maintain secure footing at all times. Non-slip footwear or anti-skid floor strips are recommended.
- Do not wear loose clothing or jewelry. Confine long hair.
- Excessive air pressure and too much free rotation may decrease life of the tool and may cause a hazardous situation.
- Check air hoses for wear, and keep them away from heat and sharp edges. Repair or replace damaged air hose immediately. Do not carry tool by the air hose.
- Air hose may cause tripping hazards; keep hose away from traffic areas.
- Do not use this tool near flammable objects, or in potentially explosive environments. Do not use near live electrical wires.
- Do not use power tools in damp or wet location, or expose them to rain. Keep work area well lighted.
- Do not leave a connected tool unattended. When not in use, disconnect tool from air source.
- Shut off air supply and discharge any residual pressure from tool before removing hose, making adjustments, changing accessories, or storing tool.
- Make sure tool is switched off, and your finger off the trigger, before connecting to air supply.
- Remove adjusting keys and wrenches before turning on tool.
- Keep visitors a safe distance from the work area. Keep children away.
- Give your work undivided attention. Looking around, carrying on a conversation and "horse-play" are careless acts that can result in serious injury.
- Do not force a tool or attachment to do a job for which it was not designed. The right tool will do the job better and more safely.
- Repetitive motions and/or exposure to constant vibration can be harmful to hands and arms. Take frequent breaks and relax hands during extended operation. Change posture to avoid discomfort or fatigue.
- Compressed air can be harmful if directed toward sensitive areas of the body, and may propel small particles caught in the air stream. Exercise proper caution.
- Use only recommended accessories; improper accessories may be hazardous.
- Maintain tools with care. Keep air tool clean and oiled for best and safest performance.
- Do not use combustible gases, carbon dioxide, oxygen or any bottled gas as an air source for the tool. These can present risk of explosion and serious injury.
- Do not lubricate the tool with combustible liquids, such as kerosene, diesel or jet fuel.
- Do not dispose of this tool with normal household waste. Never dispose of the air tool into fire.
Specific Warnings for Air Drills
- This drill is designed and intended for use by properly trained and experienced personnel only. If you are not familiar with the proper and safe operation of a pneumatic drill, do not use until proper training and knowledge have been obtained.
- Secure workpiece with clamps or vise; do not hold workpiece by hand.
- Only use accessories that are intended for use with a pneumatic drill, and which match the chuck size of the tool.
- Keep drill bits sharp and clean for best and safest performance.
- Make sure bit is centered between chuck jaws and securely tightened in chuck before operating.
- Always hold drill securely – if a bit binds, there may be high rotational force in opposite direction. Use side handle if one is provided with the tool.
[WARNING] This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to http://www.p65warnings.ca.gov.
[WARNING] Some dust, fumes and gases created by power sanding, sawing, grinding, drilling, welding and other construction activities contain 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 paint
- Crystalline silica from bricks, cement and other masonry products
- Arsenic and chromium from chemically treated lumber
Your risk of exposure 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 specifically designed to filter out microscopic particles. For more information go to http://www.p65warnings.ca.gov and http://www.p65warnings.ca.gov/wood.
Familiarize yourself with the following safety notices used in this manual:
[WARNING] This means that if precautions are not heeded, it may result in serious, or even fatal, injury.
[CAUTION] This means that if precautions are not heeded, it may result in minor injury and/or possible tool damage.
About This Manual
This manual is provided by JET, covering the safe operation and maintenance procedures for the JET Model JCT-5670 Pneumatic Drill. It contains instructions on safety precautions, general operating procedures, maintenance procedures, and parts breakdown. The tool is designed and constructed for consistent, long-term operation when used according to these instructions.
The instructions and warnings may not cover all possible workplace environments. Operators are expected to take appropriate precautions and exercise common sense. Safety of the operator and bystanders should be the first priority.
For questions or comments, contact your local supplier or JET. JET can also be reached at www.jettools.com.
Record the serial number and purchase information of your tool on the cover of this manual for quick access. Retain this manual for future reference. If the tool transfers ownership, the manual should accompany it.
Register your product online: http://www.jettools.com/us/en/service-and-support/warranty/registration/
Tool Specifications
| Model number | JCT-5670 |
| Stock number | 550670 |
| Chuck size and type | 1/2 in., keyed |
| Horsepower | 1 HP |
| Stall torque | 22 N•m (16.2 lbf·ft) |
| Spindle thread | 1/2"-20 UNF |
| Free speed | 1200 RPM |
| Average air consumption | 5 CFM |
| Air inlet | 3/8 in. NPT |
| Air hose minimum inside diameter | 1/2 in. |
| Required air pressure | 90 psi (621 kPa) |
| Vibration value | < 2.5 m/s² |
| Noise level 1 | 89.1 dB(A) |
| Rotation direction | Forward only |
| Power setting | Variable speed trigger |
| Grip | D-handle, and side-mounted handle |
| Overall Length | 14.1 in. (358 mm) |
| Housing material | Aluminum |
| Net weight | 7.1 lb. (3.2 kg) |
| Shipping weight | 9 lb. (4 kg) |
1 The specified values are emission levels and are not necessarily to be seen as safe operating levels. As workplace conditions vary, this information is intended to allow the user to make a better estimation of the hazards and risks involved only.
Specifications were current at time of publication, but because of JET's policy of continuous improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring obligations.
Setup and Assembly
Any missing parts or damage should be reported immediately to your JET distributor. Do not use a damaged tool. Read this instruction manual thoroughly for operation, maintenance, and safety instructions.
Box Contents:
- 1 x Drill
- 1 x Side handle
- 1 x Screw
- 1 x Chuck key 1/2in.
- 1 x Operation and parts manual
- 1 x Warranty card
Install the side handle on either side of the drill for left or right-hand operation. Install the screw on the opposite side to protect the threads. See Figure 1.
Figure 1: Diagram showing the drill with labels for Trigger, Screw, D-style handle, Housing, 1/2" keyed chuck, Side handle (mounts either side), and Air inlet.
Operation
[CAUTION] The drill must be properly lubricated before operation. See "Lubrication" section.
- Remove the protective cap from the air inlet (Figure 1). If an in-line oiler is not being used, add 4 or 5 drops of air tool oil (not included) into the air inlet.
- Blow out the air line to remove any dirt or moisture, then connect the air supply hose to the tool. Set air pressure to 90 psi.
IMPORTANT: Connecting a quick-change coupling directly to the tool is not recommended, as vibration may cause the connection to fail. Instead, add a leader hose and install any quick-change couplings farther down the line.
- Rotate the chuck counterclockwise by hand to open the chuck jaws.
- Insert a bit (not provided) into the chuck, and center it between the jaws. Tighten the chuck by hand while aligning the bit.Note: Insert only the shank of a twist drill bit; its flutes should remain free of the chuck jaws.
- Insert the chuck key into one of the holes on the chuck, so it meshes with the teeth on the drill chuck. Rotate the key clockwise to fully tighten the chuck.
- Place the bit against the work item and gently press the trigger. Speed is variable, determined by pressure against the trigger. Begin at slow speed and gradually increase as you drill.
- Release the trigger to stop the drill.
Important: DO NOT raise air pressure above the maximum rating for this drill. If the tool is not accomplishing the task at maximum air pressure and flow, use a larger tool or different means to achieve the task.
User-Maintenance
Lubrication
The drill should be lubricated daily (or before each use) with air tool oil through the air inlet. During continual operation, it should be re-oiled every 1 to 2 hours. This can be done with an in-line oiler, or manually. If done manually, proceed as follows:
- Disconnect the air hose from the tool.
- Place 4 or 5 drops of air tool oil into the air inlet.NOTE: Air tool oil is not provided; it is available at most major hardware and tool stores. SAE #10 oil or sewing machine oil may be used as a substitute. Do not use detergent oil.
- Re-connect air. Run the drill at low throttle without load for a few seconds to distribute the oil throughout the tool.
When finished operating the drill, disconnect the air hose. Wipe off the housing with a dry cloth. Place 4 or 5 drops of air tool oil into the air inlet; re-connect air and run the tool for a few seconds to distribute the oil. Disconnect air.
The drill has been pre-greased from the manufacturer, and it is generally unnecessary to grease the tool during its normal life. However, should the tool require future servicing, a grease fitting is supplied below the dead handle for lubricating the gears. Use Lithium Complex Moly 2 grease or equivalent.
Storage
Avoid storing the drill in very humid locations, which promotes rusting of internal mechanisms. Always oil the tool and disconnect the air hose before storage.
Air System Requirements
- Use proper air hose size (refer to tool specifications). The hose should be just long enough to serve the working area. Excessive hose length will cause pressure drop.
- Make sure the air compressor supplies clean, dry air at the correct CFM for the tool.
- Set air pressure to 90 psi.
[CAUTION] Excess air pressure and/or unclean air will shorten the tool's life and may create a hazardous situation.
- Drain water from the air compressor tank daily, as well as any condensation from air lines. Water in the air line may enter the tool and cause damage.
- Change filters on the air system on a regular basis.
- Air-line pressure may be increased accordingly to compensate for extra-long air hoses (usually over 25 feet). Inside diameter of hose should be minimum 1/2-inch.
General Air Tool Information
If the air tool is not performing according to specifications, the following are among the most common causes. (See also "Troubleshooting" section.)
- Contaminated air such as a dirty air system or water in the system.
- Using the wrong size tool for the job.
- Poor maintenance practices, such as using excessive air pressure or air volume.
- Improper or no lubrication.
Rule of Thumb
If it takes more than 8 seconds to tighten or loosen a bolt or nut with an air impact wrench at maximum setting, the air wrench is too small or the air compressor CFM is not powerful enough for the job. Continued use in either capacity will cause damage to the tool.
Tool Pressure
JET Air Tools operate on 70-to-100 psi (pounds per square inch) air pressure measured at the tool when the tool is operating. Set tool to 90 psi unless indicated otherwise. Pressure in excess of 100 psi will shorten the life of the tool.
Air System Recommendations
Equip the air compressor intake with a replaceable air filter that can be easily cleaned.
Use safety shut-off valves so air flow can be stopped quickly in case of a line break.
When using multiple hoses, air hoses should be larger than the leader hose. Join multiple hoses directly, rather than with quick connect fittings which may cause pressure drops and tool power reduction.
Use anti-whip devices across hose couplings to prevent hose from whipping in the event of a hose failure or coupling disconnect.
Always use moisture traps at the compressor for the main distribution line. Use moisture traps and in-line oilers on each downline that is to be used for air tools. (See Figure 2). Place oiler as close to the air tool as possible for best lubrication.
Figure 2: Diagram illustrating the recommended arrangement of air piping and air line system, showing an air compressor, regulator, filter, oiler, stop valves, auto drain valve, and air tool connected via hoses.
Troubleshooting JCT-5670 Pneumatic Drill
Any disassembly of the tool should be done by qualified service personnel. For problems not addressed below, contact JET technical service at 800-274-6846.
| Problem | Possible Cause | Remedy |
|---|---|---|
| Tool will not start. | Air valve closed or obstructed. | Open valve; clear any obstructions. |
| Dirt or gum deposits on components. | Flush tool with gum solvent. If problem persists, disassemble, clean and lubricate internal parts. | |
| Starts immediately when air is connected without trigger being pressed. | Trigger inoperable. | Clean trigger mechanism to ensure free movement. Replace mechanism if needed. |
| Excessive or abnormal vibration. | Bearing(s) worn. | Disassemble and inspect bearing. Grease or replace as needed. |
| Loss of power; erratic action. | Trigger malfunction. | Clean trigger mechanism to ensure free movement. Replace mechanism if needed. |
| Bearings worn. | Disassemble and inspect bearing. Grease or replace as needed. | |
| Low air pressure. | Verify compressor has proper CFM rating for tool. Check compressor regulator setting; set air pressure to 90 psi. Set regulator dial on tool to maximum setting. Check for loose connections. | |
| Moisture or obstruction in air hose. | Air supply must be clean and dry. Clean out air hose(s) and remove any kinks or bends. | |
| Improper size of air transmission lines, hoses, fittings, or couplings. | Use appropriate-sized air lines/hoses. Verify proper fittings/couplings. | |
| Dirt or gum deposits on components. | Flush tool with gum solvent. Check and clean air filter on compressor. | |
| Excessive heat develops in tool. | Rotor vanes are worn. | Replace worn components. (Replace vanes as an entire set.) |
| Insufficient lubrication. | Lubricate with air tool oil. | |
| Severe air leakage. (Note: Minimal escape of air is often normal for air tools.) | Worn components. | Replace components as needed. |
| Air valve obstructed or damaged. | Clean or replace. | |
| Housing loose or damaged. | Tighten or replace as needed. |
Replacement Parts
Service parts are listed on the following pages. To order parts or reach the service department, call 1-800-274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Please have the stock number and serial number of your tool available when you call for quick and accurate service.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.
Repair Kit (RPK): Contains parts #5,6,7,8,9,10,11.
Rebuild Kit (RBK): Contains parts #14,15,16(4),19,34,35.
Parts List
The following table lists the parts for the #550670, JCT-5670 1/2-inch Pneumatic Drill.
| Index | Part No. | Description | Qty | Index | Part No. | Description | Qty |
|---|---|---|---|---|---|---|---|
| 1 | JCT5670-01 | Housing | 1 | 27 | 7H-753527 | Spindle Screw | 1 |
| 2 | 7H-753502 | Gear Case | 1 | 28 | TS-1503051 | Soc. Hd. Cap Screw M6x20 | 4 |
| 3 | 7H-753503 | Air Inlet 3/8in. NPT | 1 | 29 | 7H-753529 | Collar | 1 |
| 4 | 7H-753504 | Throttle Valve Lever | 1 | 30 | 7H-753530 | Spindle | 1 |
| 5 | 7H-753505 | Throttle Valve Rod | 1 | 31 | 7H-753531 | Spindle Bearing Cover | 1 |
| 6 | 7H-753506 | Throttle | 1 | 32 | BB-6200Z | Ball Bearing 6200Z | 1 |
| 7 | 7H-753507 | Throttle Valve Washer | 1 | 33 | 7H-753533 | Handle | 1 |
| 8 | 7H-753508 | Spring | 1 | 34 | 7H-753534 | Gasket | 1 |
| 9 | 7H-753509 | Rubber Plate | 1 | 35 | 7H-753535 | Gasket | 1 |
| 10 | 7H-753510 | Rubber Ring | 1 | 36 | AH-2X | Spring Pin 3x14 mm | 1 |
| 11 | 7H-753511 | Cover Packing | 1 | 37 | 7H-753537 | Screw | 1 |
| 12 | 7H-753512 | Throttle Valve Cover | 1 | 38 | 7H-753538 | Washer | 1 |
| 13 | 7H-753513 | Bushing | 1 | 39 | TS-1503061 | Soc. Hd. Cap Screw M6x25 | 4 |
| 14 | 7H-753514 | End Plate | 1 | 40 | 7H-753532 | Oil Seal ZF-5 | 1 |
| 15 | 7H-753515 | Rotor | 1 | 41 | BB-6002ZZ | Ball Bearing 6002ZZ | 1 |
| 16 | 7H-753516 | Vane | 4 | 42 | 0BA66 | Needle Bearing BA66 | 2 |
| 17 | 7H-753517 | Grease Fitting M6 | 1 | 43 | 61017 | Key 3x3x10 | 2 |
| 18 | 7H-753518 | Cylinder | 1 | 44 | 7H-753544 | Filter | 1 |
| 19 | 7H-753519 | Front Plate | 1 | 45 | PN04002408 | Pin 4x25 mm | 1 |
| 20 | 7H-753520 | Bearing Cover | 1 | 46 | 610125 | Pin 4x22 mm | 1 |
| 21 | 7H-753521 | Packing | 1 | 47 | BB-6202ZZ | Ball Bearing 6202ZZ | 2 |
| 22 | 7H-753522 | Pinion 10T | 1 | 48 | 10033-17 | Drill Chuck 1/2-20UNF | 1 |
| 23 | 7H-753523 | Gear 36T | 1 | 49 | 7H-753556 | Screw Thread Insert M6 | 8 |
| 24 | 7H-753524 | Pinion 14T | 1 | 50 | JAT450-54 | Side Handle | 1 |
| 25 | 7H-753525 | Gear 32T | 1 | 51 | JCT5670-51 | Washer | 4 |
| 26 | 7H-753526 | Bearing Cover | 1 | 52 | CK-15 | Chuck key 1/2in. (not shown) | 1 |
The exploded view diagram on page 11 shows the arrangement of these parts.
Warranty and Service
JET warrants every product it sells against manufacturers' defects. For service or repair, contact Technical Service by calling 1-800-274-6846, Monday through Friday, 8 AM to 5 PM CST.
Warranty Period
The general warranty period is specified in the product literature or on the official JET website. JET products carry a limited warranty that varies in duration. Accessories have a limited warranty of one year from the date of receipt. Consumable items have a 90-day limited warranty against manufacturer's defects.
Who is Covered
This warranty covers only the initial purchaser of the product from the date of delivery.
What is Covered
This warranty covers defects in workmanship or materials, subject to stated limitations. It does not cover failures due to misuse, abuse, negligence, accidents, normal wear-and-tear, improper repair, alterations, or lack of maintenance. JET woodworking machinery is designed for wood; using it with metal, plastics, or other materials outside recommended guidelines may void the warranty (exceptions: acrylics and other natural items for wood turning).
Warranty Limitations
Woodworking products used commercially or industrially with a Five Year Warranty default to a Two Year Warranty. Contact Technical Service for clarification.
How to Get Technical Support
Contact Technical Service at 1-800-274-6846. Proof of initial purchase will be required. For product inspection, the Technical Service representative will provide assistance. JET has Authorized Service Centers throughout the United States. Find a local center via the JET website or by calling the service number.
More Information
For complete, up-to-date product information, check with your local distributor or visit the JET website.
How State Law Applies
This warranty grants specific legal rights, subject to applicable state law.
Limitations on This Warranty
JET limits all implied warranties to the period of the limited warranty for each product. Implied warranties of merchantability and fitness for a particular purpose are excluded. Some states do not allow limitations on implied warranty duration, so the above limitation may not apply.
JET shall not be liable for death, injuries to persons or property, or for incidental, contingent, special, or consequential damages arising from the use of its products. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply.
JET sells through distributors only. Specifications in JET printed materials and on the official JET website are general information and not binding. JET reserves the right to make alterations to parts, fittings, and accessory equipment without prior notice. JET branded products are not sold in Canada by JPW Industries, Inc.
Product Listing with Warranty Period
- 90 Days - Parts; Consumable items
- 1 Year - Motors; Machine Accessories
- 2 Year - Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used for industrial or commercial purposes
- 5 Year - Woodworking Machinery
- Limited Lifetime - JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist Accessories; Shop Tools; Warehouse & Dock products; Hand Tools; Air Tools
NOTE: JET is a division of JPW Industries, Inc. References to JET also apply to JPW Industries, Inc., or its successors.
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