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 9

9.3.2

  Belt table 

1.  To change belt table angle, loosen clamping 

knob on right side of platen housing (refer to 
Figure 6). 

2.  Move table to desired angle. 

3.  Tighten knob to secure table. 

10.0

  Operation 

This section defines the controls and other features 
with which the operator should be familiar. Refer to 
Figures 7 and 8 for some typical sander operations. 

 

Figure 7:  contouring with belt sander 

 

Figure 8:  bevel sanding with miter gauge 

10.1

  Miter gauge 

A miter gauge is provided with the machine and can 
be used on either belt sander or disc sander work 
tables. The angle of miter gauge can be adjusted up 
to 45 degrees to accommodate angular work piece 
surfaces. 

10.2

  Controls 

The on/off switch is located on the side of the 
machine base. It has a safety key to prevent 
unauthorized use of the machine. Turn off sander, 
pull out safety key, and store key in a safe place. 
Key must be reinserted to start machine. 

11.0

  User-maintenance 

 Always disconnect power to 

machine before performing maintenance. 

 

 

Failure to do this may result in serious personal 
injury. 

Numbers in parentheses correspond to index 
numbers in parts list, 

sect. 13.1.1

11.1

  Lubrication 

The bearings used in the sander are pre-lubricated 
and sealed. The bearings do not require periodic 
lubrication. 

11.2

  Cleaning 

Periodically use a vacuum cleaner to remove 
sanding debris from the machine. In hard to reach 
areas, brush the debris loose while vacuuming. 

11.3

  Replacing sanding belt 

1. Disconnect 

electrical 

power. 

2.  Position sanding belt platen (4) in vertical 

position. Remove eight screws (97) and guard 
(96). 

3.  Remove screw (76) and guard (75). 

4.  Move tensioning lever (50) downward to 

slacken sanding belt (79).  

5.  Slip sanding belt off drums (5) and (39). Also 

refer to Figure 9. 

 

Figure 9:  sanding belt removal 

6.  Install replacement sanding belt on drums. 

7.  Position edges of sanding belt evenly on the 

drums. 

Summary of Contents for J-4210

Page 1: ...Instructions and Parts Manual Belt and Disc Sanding Machine Model J 4210 JET 427 New Sanford Road LaVergne Tennessee 37086 Part No M 414550 Ph 800 274 6848 Revision C 10 2018 www jettools com Copyrig...

Page 2: ...the floor 11 Secure your work Use clamps or a vise to hold your work when practical It is safer than using your hands and it frees both hands to operate the machine 12 Never brush chips away while th...

Page 3: ...ng or poor handling 9 When installing a new disc be certain the disc is accurately centered on the drive wheel Failure to do so could cause a serious unbalanced condition 10 Always present the workpie...

Page 4: ...usting belt tracking 8 9 2 Platen housing position 8 9 3 Adjusting sander tables 8 10 0 Operation 9 10 1 Miter gauge 9 10 2 Controls 9 11 0 User maintenance 9 11 1 Lubrication 9 11 2 Cleaning 9 11 3 R...

Page 5: ...web site www jettools com Retain this manual for future reference If the machine transfers ownership the manual should accompany it Read and understand the entire contents of this manual before attem...

Page 6: ...er slot 5 8 in 16 mm Disc sanding Disc speed 2100 RPM Abrasive disc size and grit 10 in 254 mm 80 Grit Disc table Cast iron 7 1 2 x 13 in 191 x 330 mm Disc table miter slot 5 8 in 16 mm Disc table til...

Page 7: ...ailure to comply may cause serious or fatal injury Use only 3 wire extension cords that have 3 prong grounding plugs and 3 pole receptacles that accept the tool s plug Repair or replace damaged or wor...

Page 8: ...djustment 9 2 Platen housing position The sanding belt can be operated with the platen housing at horizontal vertical or any angle in between Change position of platen housing as follows Numbers in pa...

Page 9: ...t safety key and store key in a safe place Key must be reinserted to start machine 11 0 User maintenance Always disconnect power to machine before performing maintenance Failure to do this may result...

Page 10: ...to rod 74 Position table so it is level and tighten screw 65 against rod 74 11 Connect electrical power and operate machine to check operation 11 5 Replacing V belts 1 Disconnect electrical power 2 Re...

Page 11: ...he set screw 29 Install plate 55 and secure with four screws 56 Check for clearance between plate 55 and sanding disc 30 Install table 60 onto rod 74 Position table so it is level and tighten screw 65...

Page 12: ...belt tension inadequate Tighten sanding belt Excessive pressure being applied to platen housing Reduce pressure on sanding belt and platen housing Motor belt loose Tighten motor belt Disc stalls when...

Page 13: ...13 13 1 1 J 4210 Belt Disc Sander Exploded View...

Page 14: ...hown 300MFD 125VAC 1 26 5513035 Hex Screw 3 8 X 1 3 27 5513036 Flat Washer 3 8 3 28 5513037 Screw 3 8 X 1 1 2 1 29 5513038 Nut Jam 1 30 J 5513039G Mounting Bracket 1 31 5513040 Screw 5 16 X 1 1 32 551...

Page 15: ...Guard 1 76 5513094 Screw 3 16 X 5 8 1 77 5513095 Sanding Belt Cover not shown 1 77A 5513096 Cap Screw not shown 8 78 5512766 Switch Assembly 1 79 5051841 Abrasive Belt 6 x 48 80 Grit 1 5512764 Abrasi...

Page 16: ...16 13 2 1 J 4210 Stand Exploded View 13 2 2 J 4210 Stand Parts List Index No Part No Description Size Qty 1 J 5513476G Access Panel 1 2 5513477 Knob 2 3 414549 Complete Stand Assembly 1...

Page 17: ...17 14 0 Electrical Connections for J 4210...

Page 18: ...tional action needed JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Loc...

Page 19: ...19 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...

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