Grizzly G0844 Owner'S Manual Download

Page: 35 / 48

Model G0844 (Mfd. Since 2/18)

-33-

Symptom

Possible Cause

Possible Solution

Bad surface finish.

1. Dull tooling or wrong tool used for task.
2. Tool height is not

⁄

" above spindle

centerline.

3. Spindle speed is wrong.
4. Excessive vibration.

1. Sharpen tooling, select correct tool for operation.
2. Adjust tool rest so tool is

⁄

" above spindle

centerline.

3. Adjust for appropriate spindle speed (

Page 23).

4. Troubleshoot possible causes/solutions in this table.

Excessive vibration
upon startup
(when workpiece is
installed).

1. Workpiece is mounted incorrectly.

2. Workpiece warped, out of round, or flawed.

3.  Lathe is resting on an uneven surface.
4.  Spindle speed too fast for workpiece.
5.  Workpiece hitting stationary object.
6.  Tailstock or tool rest not securely clamped

to lathe bed.

7.  Belt pulleys are not properly aligned.
8.  Motor mount bolts are loose.
9.  Belt is worn or damaged.
10. Spindle bearings are worn or damaged.

1. Remount workpiece, making sure that centers are

embedded in true center of workpiece.

2. Cut workpiece to be concentric, or use a different

workpiece.

3. Adjust feet to eliminate wobble.
4. Reduce spindle speed (

Page 23).

5. Stop lathe and fix interference problem.
6. Check lock levers and tighten if necessary (

Pages

18–19).

7. Align belt pulleys (

Page 35).

8. Tighten motor mount bolts.
9. Replace belt (

Page 34).

10. Test by rotating shaft; rotational grinding/loose shaft

requires bearing replacement.

Chisel grabs or digs
into workpiece.

1.  Wrong chisel/tool being used.
2.  Chisel/tool too dull.
3.  Tool rest height not set correctly.
4.  Tool rest is set too far from workpiece.

1.  Use correct chisel/tool.
2.  Sharpen or replace chisel/tool.
3.  Correct tool rest height (

Page 19).

4. Move tool rest closer to workpiece.

Tailstock moves
under load.

1. Tailstock mounting bolt/hex nut is loose.
2. Bed or clamping surface is excessively oily

or greasy.

1. Tighten mounting bolt/hex nut.
2. Clean bed or clamping surface to remove excess

oil/grease.

Spindle lacks
turning power or
starts up slowly.

1. Belt is slipping.
2. Pulleys loose.

3. Workpiece too heavy for spindle.

1. Tighten/adjust belt (

Page 34).

2. Tighten pulley set screw; re-align/replace shaft,

pulley set screw, and key.

3. Remove excess material before remounting; use

lighter workpiece.

Quill will not move
forward when
handwheel is turned

1. Keyway is not aligned with quill lock lever.

1. Align quill keyway and quill lock lever and slightly

tighten lever to engage keyway.

DRO doesn't give
reading; reading
incorrect.

1. Shorted/disconnected wiring/plugs.

2.  Variable-speed potentiometer at fault.
3.  DRO speed sensor at fault.
4.  Circuit board at fault.

1. Inspect wiring connections on circuit boards,

sensors, and plugs. Replace/repair as necessary.

2.  Test/replace if at fault.
3.  Test/replace if at fault.
4.  Inspect/replace if at fault.

Wood Lathe Operation

Summary of Contents for G0844

Page 1: ...PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL INC BLAB19377 PRINTED IN CHINA V1 05 18 MODEL G0844 14 X 20 VARIABLE SPEED BENCHTOP WOOD LATHE OWNER S MANUAL For models manufactured since 2 18 ...

Page 2: ...ng grinding tool integrity and the usage of personal protective equipment The manufacturer will not be held liable for injury or property damage from negligence improper training machine modifications or misuse Some dust created by power sanding sawing grinding drilling and other construction activities contains chemicals known to the State of California to cause cancer birth defects or other repr...

Page 3: ...lstock 18 Adjusting Tool Rest 19 Installing Removing Headstock Center 20 Installing Removing Tailstock Center 21 Installing Faceplate 22 Adjusting Spindle Speeds 23 Indexing 24 Spindle Turning 25 Faceplate Turning 27 Sanding Finishing 28 Selecting Turning Tools 29 SECTION 5 ACCESSORIES 30 SECTION 6 MAINTENANCE 31 Schedule 31 Cleaning Protecting 31 Lubrication 31 SECTION 7 SERVICE 32 Troubleshootin...

Page 4: ...ade every effort to be exact with the instruc tions specifications drawings and photographs in this manual Sometimes we make mistakes but our policy of continuous improvement also means that sometimes the machine you receive is slightly different than shown in the manual If you find this to be the case and the difference between the manual and machine leaves you confused or unsure about something ...

Page 5: ...ore operating d Rotate workpiece by hand before applying power e Rough out workpiece before installing on faceplate f Do not mount split workpiece or one containing knot g Use lowest speed when starting new workpiece Faceplate Tool Rest Quill Lock Lever Tailstock Belt Tension Lock Handle Belt Tension Lever Spindle Direction Switch Tool Holder Spindle RPM Readout ON OFF Switch Quill Handwheel Tails...

Page 6: ... belt B Belt Tension Lock Handle Locks belt ten sion lever in place Figure 1 Belt tension lever and lock handle C Indexing Pin Knob Locks spindle in place for indexing operations IMPORTANT Indexing pin knob must be pulled out BEFORE operating machine Failure to do so can damage motor or machine components A B C D Tool Rest Provides stable platform for cut ting tools E Tool Rest Lock Handle Secures...

Page 7: ...high within range governed by pulley belt position I ON OFF Switch Turns lathe motor ON OFF to start stop spindle rotation J Spindle RPM Readout Indicates spindle speed in revolutions per minute RPM K Tailstock Lock Lever Secures tailstock in position along bed L Quill Holds centers or tooling Can be moved toward or away from spindle M Quill Lock Handle Secures quill in position N Tailstock Handwh...

Page 8: ...ping Dimensions Type Wood Box Content Machine Weight 137 lbs Length x Width x Height 39 x 12 x 23 in Must Ship Upright Yes Electrical Power Requirement 110V Single Phase 60 Hz Full Load Current Rating 11A Minimum Circuit Size 15A Connection Type Cord Plug Power Cord Included Yes Power Cord Length 6 ft Power Cord Gauge 16 AWG Plug Included Yes Included Plug Type 5 15 Switch Type Push Button ON OFF ...

Page 9: ...MT 2 Type of Included Tailstock Center Live Construction Bed Cast Iron Base Cast Iron Headstock Cast Iron Tailstock Cast Iron Paint Type Finish Enamel Other Related Information Bed Width 5 1 8 in Faceplate Size 4 in Other Specifications Country of Origin China Warranty 1 Year Approximate Assembly Setup Time 15 Minutes Serial Number Location ID Label ISO 9001 Factory Yes Certified by a Nationally R...

Page 10: ...proof DANGEROUS ENVIRONMENTS Do not use machinery in areas that are wet cluttered or have poor lighting Operating machinery in these areas greatly increases the risk of accidents and injury MENTAL ALERTNESS REQUIRED Full mental alertness is required for safe operation of machin ery Never operate under the influence of drugs or alcohol when tired or when distracted For Your Own Safety Read Instruct...

Page 11: ...moving parts or flying debris Make sure they are properly installed undamaged and working correctly BEFORE operating machine FORCING MACHINERY Do not force machine It will do the job safer and better at the rate for which it was designed NEVER STAND ON MACHINE Serious injury may occur if machine is tipped or if the cutting tool is unintentionally contacted STABLE MACHINE Unexpected movement dur in...

Page 12: ...ting workpiece to stop on its own Never put hands or another object on workpiece to stop it SAFELY MEASURE WORKPIECE Only mea sure mounted workpiece after it has completely stopped Trying to measure a spinning workpiece increases entanglement risk SANDING POLISHING To reduce entanglement risk remove tool rest before sanding Never completely wrap sandpaper around workpiece VERIFY WORKPIECE INTEGRIT...

Page 13: ...sized circuit To reduce the risk of these hazards avoid over loading the machine during operation and make sure it is connected to a power supply circuit that meets the specified circuit requirements For your own safety and protection of property consult an electrician if you are unsure about wiring practices or electrical codes in your area Note Circuit requirements in this manual apply to a dedi...

Page 14: ...rd size gets longer and the gauge size gets smaller higher gauge numbers indicate smaller sizes Any extension cord used with this machine must be in good condition and contain a ground wire and matching plug receptacle Additionally it must meet the following size requirements Minimum Gauge Size 14 AWG Maximum Length Shorter is Better 50 ft Grounding Plug Requirements Figure 6 Typical 5 15 plug and...

Page 15: ...ine Description Qty Additional People 1 Safety Glasses 1 Cleaner Degreaser As Needed Disposable Shop Rags As Needed Needed for Setup Inventory The following is a list of items shipped with your machine Before beginning setup lay these items out and inventory them If any non proprietary parts are missing e g a nut or a washer we will gladly replace them or for the sake of expediency replacements ca...

Page 16: ...2 Coat the rust preventative with a liberal amount of cleaner degreaser then let it soak for 5 10 minutes 3 Wipe off the surfaces If your cleaner degreas er is effective the rust preventative will wipe off easily If you have a plastic paint scraper scrape off as much as you can first then wipe off the rest with the rag 4 Repeat Steps 2 3 as necessary until clean then coat all unpainted surfaces wi...

Page 17: ...the test run immediately stop the machine disconnect it from power and fix the problem BEFORE operating the machine again The Troubleshooting table in the SERVICE section of this manual can help To test run machine 1 Clear all setup tools away from machine 2 Insert end of power cord into receptacle in back of control box see Figure 10 Figure 10 Installing power cord Power Cord Control Box DO NOT s...

Page 18: ...Pin Knob 4 Connect machine to power supply 5 Verify machine is operating correctly by set ting spindle direction switch in forward down position pressing ON button see Figure 12 then slowly turning spindle speed dial clock wise The digital readout should illuminate and spindle should rotate down toward front of lathe 3 Set spindle direction switch to neutral mid dle position and turn spindle speed...

Page 19: ...cal operation the operator does the following 1 Examines workpiece to make sure it is suit able for turning No extreme bows knots or cracks should exist 2 Prepares and trims workpiece with a bandsaw or table saw to make it roughly concentric 3 Installs workpiece between centers or attach es it to faceplate or chuck 4 Adjusts tool rest according to type of operation and sets minimum clearance betwe...

Page 20: ...large loose knots Excessive Warping Workpieces with excessive bowing or twist ing are unstable and unbalanced Never turn these workpieces at high speed or instability will be magnified and the workpiece can be ejected from the lathe causing injury Only turn concentric workpieces Adjusting Tailstock The tailstock is equipped with a cam action clamping system to secure it to the lathe bed When the l...

Page 21: ...s safe and comfortable for you Improperly supported or positioned cutting tools can catch on workpiece ejecting tool from your hands with great force To reduce this risk always ensure tool rest is properly positioned for each type of opera tion cutting tool is firmly supported against tool rest BEFORE cutting and cutting tool is properly positioned to cut at the correct angle for tool and operatio...

Page 22: ...lls in the headstock spindle with an MT 2 tapered fit 3 Insert tapered end of center into spindle and push it in with a quick firm motion as shown in Figure 15 4 Make sure center is securely installed by attempting to pull it out by hand A properly installed center will not pull out easily Installing Headstock Center 1 DISCONNECT MACHINE FROM POWER 2 Make sure mating surfaces of center and spindle...

Page 23: ... Make sure mating surfaces of center and quill are free of debris and oily substances before inserting center to ensure a good fit and reduce runout 3 Firmly insert tapered end of center into tailstock quill as shown in Figure 17 4 Make sure center is securely installed by attempting to pull it out by hand a properly installed center will not pull out easily Installing Tailstock Center 1 Loosen qu...

Page 24: ...rkpiece to your face plate refer to Faceplate Turning on Page 27 Installing Faceplate 1 DISCONNECT MACHINE FROM POWER 2 Insert included wrench over flats on spin dle While holding spindle in place thread faceplate clockwise onto spindle shaft until secure against shoulder on spindle shaft 3 Tighten secure 2 set screws on faceplate see Figure 18 Tools Needed Qty Open End Wrench 32mm 1 Hex Wrench 3m...

Page 25: ...eed range that will include the selected RPM Always choose correct spindle speed for your operation Using wrong speed may lead to workpiece breaking loose or being thrown from lathe at a high rate of speed causing fatal or severe impact injuries 4 Open front access cover and remove side access cover see Figure 22 Tool Needed Phillips Head Screwdriver 2 1 Diameter of Work piece Roughing RPM General...

Page 26: ...indle pulleys see Figure 23 8 After verifying belt tension is correct re install side access cover and close front access cover Figure 24 Testing for 1 2 belt deflection Pulley Deflection Pulley 1 2 Indexing Indexing on a lathe is typically used for workpiece layout and other auxiliary operations that require equal distances around the workpiece circumfer ence such as clock faces or inlays By inse...

Page 27: ...nter into workpiece cut 1 8 deep saw kerfs in headstock end of workpiece along diagonal lines marked in Step 1 5 If your workpiece is over 2 x 2 cut corners off workpiece lengthwise to make turning safer and easier see Figure 28 Workpiece Center Corners Removed Figure 28 Corners of workpiece removed Spindle turning is the operation performed when a workpiece is mounted between centers in the heads...

Page 28: ...ece center mark then lock tailstock in this position 10 Loosen quill lock handle and rotate tailstock handwheel to push live center into workpiece at least 1 4 11 Properly adjust tool rest to workpiece see Adjusting Tool Rest on Page 19 Do not press the workpiece too firmly with the tailstock or the bearings will bind and overheat Do not adjust the tailstock too loosely or the workpiece will spin ...

Page 29: ...kpiece Screws with tapered heads can split faceplate or snap off during operation Correct Incorrect Figure 32 Correct and incorrect screw types 3 Thread and secure faceplate onto headstock spindle refer to Installing Faceplate on Page 22 If wood screws cannot be placed in workpiece faceplate can be mounted to a backing block attached to workpiece see Mounting Workpiece on Backing Block Mounting Wo...

Page 30: ...lue to cure according to manu facturer s instructions 5 Follow Steps 1 3 under Mounting Workpiece on Faceplate see Page 27 to attach backing block to faceplate Mounting Workpiece on Backing Block Sanding Finishing After the turning operations are complete the workpiece can be sanded and finished before removing it from the lathe as shown in Figure 33 Figure 33 Typical sanding operation Note Whenev...

Page 31: ... with one side higher than the other usually at an angle of 20 40 Figure 35 Example of a skew chisel Scrapers Typically used where access for other tools is limited such as hollowing oper ations This is a flat double ground tool that comes in a variety of profiles round nose spear point square nose etc to match many different contours Figure 36 Example of a round nose scraper Parting Tools Used fo...

Page 32: ...Standard Skew 3 16 Diamond Side Cut Scraper 1 Square Scraper and 1 2 Round Scraper Overall lengths are 16 to 19 T25535 New Turning Wood Book The appeal of woodturning is simple with only a few hand tools and a lathe remarkable results can be quickly achieved including beautiful bowls boxes in the round lamp bases and furniture parts For over 20 years woodturners have been turning to Richard Raffan...

Page 33: ...atively easy Vacuum excess wood chips and sawdust and wipe off the remaining dust with a dry cloth If any resin has built up use a resin dissolving cleaner to remove it Protect the unpainted cast iron surfaces by wip ing them clean after every use this ensures moisture from wood dust does not remain on bare metal surfaces Keep the surfaces rust free with regular applications of products like G96 G...

Page 34: ...ect replace if at fault 10 Test replace if at fault 11 Test repair replace Machine stalls or is underpowered 1 Machine undersized for task 2 Workpiece material not suitable for machine 3 Feed rate cutting speed too fast 4 Variable speed potentiometer at fault 5 Belt slipping 6 Motor brushes worn or at fault 7 Circuit board at fault 8 Pulley slipping on shaft 9 Motor at fault 1 Use sharp chisels re...

Page 35: ...eplace belt Page 34 10 Test by rotating shaft rotational grinding loose shaft requires bearing replacement Chisel grabs or digs into workpiece 1 Wrong chisel tool being used 2 Chisel tool too dull 3 Tool rest height not set correctly 4 Tool rest is set too far from workpiece 1 Use correct chisel tool 2 Sharpen or replace chisel tool 3 Correct tool rest height Page 19 4 Move tool rest closer to wor...

Page 36: ...de access cover and close front access cover Replacing Belt 4 Press belt with moderate pressure in center to check tension Belt is correctly tensioned when there is approximately 1 2 deflection when pushed as shown in Figure 42 If there is more than 1 2 deflection repeat the tensioning procedure until it is correct If tension cannot be achieved replace belt 1 DISCONNECT MACHINE FROM POWER 2 Remove...

Page 37: ...t screws on spindle pulley see Figure 45 4 Slide spindle pulley into alignment with motor pulley Note When pulleys are properly aligned there should be no unusual or pulsing sounds coming from the belt 5 Tighten set screws Figure 45 Location of spindle pulley and set screws Aligning Pulleys Spindle Pulley 7 Re install end cover and headstock spindle handwheel 8 Loosely install belt on inner or out...

Page 38: ...nscrew and remove brush caps on front and rear of motor see Figure 46 Figure 47 Removing brush from motor 3 Remove brushes from motor see Figure 47 Note When brush caps are being removed a spring will pop out of the motor socket a spring is firmly attached to each carbon brush DO NOT separate brush from spring 4 Use a ruler to measure wear of each carbon brush If either brush is worn to less than ...

Page 39: ...n overload If the spindle does not start replace the fuse Replacement Fuse P0844084 1 Tool Needed Qty Flat Head Screwdriver 1 To replace fuse 1 DISCONNECT MACHINE FROM POWER 2 Rotate end of fuse holder see Figure 48 on electrical box counterclockwise then remove fuse 3 Insert new fuse 4 Re install fuse holder Figure 48 Location of fuse holder and fuse Fuse Fuse Holder ...

Page 40: ...nt at the time of printing but may not match your machine If you find this to be the case use the wiring diagram inside the motor junction box CAPACITORS INVERTERS Some capacitors and power inverters store an electrical charge for up to 10 minutes after being disconnected from the power source To reduce the risk of being shocked wait at least this long before working on capacitors EXPERIENCING DIF...

Page 41: ... Wiring Diagram 110 VAC 5 15 Plug Hot Ground Motor 110V 250VAC A1218 9 6 3 8 5 2 7 4 1 OUT IN 10A M M AC2 10A Ground Spindle Speed Sensor Neutral Spindle Direction Switch ON OFF Switch FUSE Circuit Board Potentiometer Rectifier 3 2 1 To Spindle Speed Sensor To Motor To Power Grounding Plate CHILY 7033 KEDU KJD20 2 10A 120V Digital RPM Display ...

Page 42: ...y com parts to check for availability BUY PARTS ONLINE AT GRIZZLY COM Scan QR code to visit our Parts Store 1 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 51 62 71 75 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 4 61 57 52 54 55 31 8 8 12 15 84 1 84 2...

Page 43: ...0844080 HEX WRENCH 5MM 24 P0844024 OUTBOARD HANDWHEEL M20 2 5 X 25 65D 81 P0844081 HEX WRENCH 12MM 25 P0844025 EXT THREAD LOCK NUT M20 2 5 X 12 82 P0844082 RUBBER HANDLE SLEEVE 26 P0844026 KNOCKOUT ROD 83 P0844083 MOTOR PULLEY 27 P0844027 MOTOR PULLEY COVER 84 P0844084 MOTOR 1HP 110V DC 1 PH 28 P0844028 CAP SCREW M5 8 X 10 84 1 P0844084 1 MOTOR BRUSH 2 PC SET 29 P0844029 SET SCREW M5 8 X 6 84 2 P0...

Page 44: ... resuming operations For replacements contact 800 523 4777 or www grizzly com 201 202 203 204 205 206 207 208 204 Labels Cosmetics REF PART DESCRIPTION REF PART DESCRIPTION 201 P0844201 NOTICE LABEL 205 P0844205 GRIZZLY COM LABEL 202 P0844202 MACHINE ID LABEL 206 P0844206 DISCONNECT POWER LABEL 203 P0844203 WARNING LABEL 207 P0844207 MACHINE HAZARD LABEL 204 P0844204 ELECTRICITY LABLEL 208 P084420...

Page 45: ... metalworker ____ 0 2 Years ____ 2 8 Years ____ 8 20 Years ____20 Years 6 How many of your machines or tools are Grizzly ____ 0 2 ____ 3 5 ____ 6 9 ____10 7 Do you think your machine represents a good value _____Yes _____No 8 Would you recommend Grizzly Industrial to a friend _____Yes _____No 9 Would you allow us to use your name as a reference for Grizzly customers in your area Note We never use ...

Page 46: ...D LINE FOLD ALONG DOTTED LINE GRIZZLY INDUSTRIAL INC P O BOX 2069 BELLINGHAM WA 98227 2069 Place Stamp Here Name_______________________________ Street_______________________________ City______________State______Zip______ Send a Grizzly Catalog to a friend ...

Page 47: ... shall be tried in the State of Washington County of Whatcom We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the use of our products To take advantage of this warranty contact us by mail or phone and give us all the details We will then issue you a Return Number which must be clearly posted on the o...

Page 48: ......

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