Grizzly T32021, T32020 User guide

MODEL T32020/T32021
15" & 20" V-HELICAL
CUTTERHEAD
INSTRUCTIONS
For questions or help with this product contact Tech Support at (570) 546-9663 or techsupport@grizzly.com
Introduction
The Model T32020 15" and T32021 20" V-Helical Cutterheads are designed to replace the straight­knife and spiral cutterheads in the following Grizzly and Shop Fox planers:
T32020
Grizzly G0453 Series
Grizzly G0550/G0551
Grizzly G1021 Series (Mfd. Since 1995)
Shop Fox W1692, W1723, W1724, W1742, W1742S
T32021
Grizzly G0454 Series
Grizzly G1033 Series
Shop Fox W1683, W1718, W1747, W1754, W1754 S
The Model T32020 & T32021 will also replace cutterheads in the following non-Grizzly machines, but are outside the scope of these instructions:
T32020
Bridgewood BW15P
Delta DC-380, 22-675, 22-780, 22-785, 22-790X, 22-790X5
General 30-115, 30-125CE
Jet JWP-15CS
Powermat ic 17912 09-15, 1791210-15S
Sunhill CT-38B, CT-382
Woodtek 855266
T32021
Bridgewood BW20P
General 30-300
Jet JWP-208, JWP-208-1
Powermatic 209
Sunhill CT-508
Woodtek 924083
The total installation/setup procedure takes approximately three hours. Read these instruc­tions thoroughly before beginning.
Note: Not all pictures in these instructions will exactly reflect your machine. Some photos are provided for representation purposes only to help you better understand the instructions given.
Inventory (Figure 1)
Description Qty
A. V-Helical Cutterhead Assembly .................. 1
B. Flat Head Torx Screws T20 M6-1 x 15 ..... 10
C. Torx Bits T-20 .............................................. 5
D. Indexable Inserts 15 x 15 x 2.5mm ............. 5
E. T-Handle Bit Driver
(T32020)
Figure 1. Model T32020/T32021 inventory.
To reduce your risk of serious injury, read these entire instructions BEFORE operating machine.
1
4" ................................ 1
A
(T32021)
B
C
E
D
COPYRIGHT © SEPTEMBER, 2021 BY GRIZZLY INDUSTRIAL, INC.
WARNING : NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
(FOR MODELS MFD. SINCE 11/20) #KS21716 PRINTED IN TAIWAN
V1.0 9.21
Wear safety glasses during the entire process!
Removing Existing Cutterhead
These instructions make reference to many pro­cedures detailed in your planer manual. Always consult your manual for these procedures.
Note: Call Technical Support at (570) 546-9663 if you need help during the removal process.
Planer knives are extremely sharp. You must remove the planer knives, or mount the knives blade side down to avoid the risk of serious personal injury.
Specifications
T32020
Maximum Width of Cut .................................... 15"
Cutterhead Diameter .........................................3"
Number of Indexable Inserts ............................ 60
Indexable Insert Size ..................15 x 15 x 2.5mm
T32021
Maximum Width of Cut .................................... 20"
Cutterhead Diameter ......................................3
Number of Indexable Inserts ............................ 80
Indexable Insert Size ..................15 x 15 x 2.5mm
1
8"
Recommended Tools
Description Qty
Additional Person(s) ................................ 1–2
Safety Glasses (per person) ................. 1 Pair
Heavy Leather Gloves ..........................1 Pair
Replacement Cutterhead Bearing ............... 1
Phillips Head Screwdriver #2 ...................... 1
Flat Head Screwdriver 1⁄4" ............................ 1
Hex Wrenches 4, 5, 6mm ............................ 1
Adjustable Wrenches .................................. 2
Wooden or Rubber Mallet ........................... 1
Steel Hammer ............................................. 1
Screw or Bolt M6-1 x 25 .............................. 1
Wood Blocks 2" x 4" (4" Length) ................. 6
Copper Pipe 1" ID (4" Length) ..................... 6
Sprocket/Pulley Puller ................................. 1
Oil Funnel .................................................... 1
Drain Pan .................................................... 1
Clean Shop Rags ........................ As Needed
ISO 320 Gear Oil ......................... As Needed
Heavy Cardboard ........................ As Needed
Heav y Tap e ................................. As Needed
Correction Fluid ........................... As Needed
To remove existing cutterhead:
1. DISCONNECT MACHINE FROM POWER!
2. Remove top cover and dust port to expose
cutterhead.
3. Straight-Knife Cutterheads Only: Put on heavy leather gloves and remove knives from existing cutterhead.
4. Remove belt cover, then remove V-belt(s) from pulleys.
Note: This may require loosening belt tension.
This procedure is outlined in the SERVICE section of your planer manual.
5. Remove hex bolt and flat washer holding cutterhead pulley in place.
6. Rotate cutterhead until cutterhead pulley key is at an upright position.
7. Remove pulley and key.
Note: If pulley is difficult to remove, use a
pulley puller (see Figure 2).
Figure 2. Example of using a pulley puller.
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8. Remove table elevation handwheel and key.
T32020/T32021 V-Helical Cutterheads
9. Remove both rear guards from the gearbox cover (see Figure 3).
14. Remove sprockets, keys, and chains togeth­er, taking care to keep chains unbroken.
15. Thoroughly drain planer gearbox into drain pan by removing drain plug (see Figure 5).
Figure 3. Gearbox cover rear guards.
10. Remove gearbox cover cap screw and gear-
box cover.
11. Remove (3) hex bolts and washers from (3) sprockets (see Figure 4) to access sprocket keys.
12. Unhook idler spring (see Figure 4) and move idler up out of the way.
Idler
Fill
Plug
Figure 5. Location of drain and fill plug.
16. Insert (6) 2" x 4" wood blocks (4" length) directly beneath cutterhead (see Figure 6).
2" x 4" Wood Blocks
Drain
Plug
4"
Idler
Spring
Figure 4. Location of sprocket and chain compo-
nents (hex bolts and washers removed).
13. Rotate cutterhead so that sprocket keys are in a generally upright position.
Note: Mark outside of sprockets with correc-
tion fluid as a way of remembering which side of each sprocket faces outwards.
T32020/T32021 V-Helical Cutterheads
Figure 6. Location of support blocks.
17. Re-install handwheel and key, then carefully
raise table so cutterhead just touches top of support blocks.
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18. Remove (4) cap screws on top of planer gearbox (see Figure 7).
Figure 7. Location of gearbox cap screws.
19. Have an additional person hold the gearbox
steady while you use a rubber or wooden mallet to unseat cutterhead from headstock (see Figure 8).
23. Remove cap screw from inside of helical gear, and remove helical gear (see Figure 9).
Cap
Screw
Helical Gear
Figure 9. Gearbox helical gear and cap screw.
24. Insert spare M6-1 screw or bolt into exposed
hole in gearbox end of cutterhead, as shown in Figure 10.
Figure 8. Unseating cutterhead from headstock.
20. Rest gearbox-cutterhead assembly on a flat,
stable surface for the following step.
21. Remove (5) cap screws and (1) ball knob from front of gearbox cover.
22. Separate gearbox cover by gently tapping near the gasket using a mallet and flat head screwdriver.
Screw Hole
Gearbox
Figure 10. Location of cutterhead screw hole.
25. While supporting gearbox, remove cutterhead
by tapping on screw or bolt with a hammer, (see Figure 11).
Note: It may be necessary to tap on the back
of gearbox with a rubber or wooden mallet.
Figure 11. Removing cutterhead with hammer.
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26. Visually inspect all bearing bores in head­stock and gearbox, and remove any burrs or rough spots.
T32020/T32021 V-Helical Cutterheads
To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments,
To install V-helical cutterhead:
1. Put on heavy leather gloves and wrap new
cutterhead in cardboard, then securely fasten it with heavy tape.
maintenance, or service.
Cutterhead inserts are extremely sharp. Wear heavy leather gloves to avoid the risk of serious personal injury.
Installing V-Helical Cutterhead
These instructions make reference to many pro­cedures detailed in your planer manual. Always consult your manual for these procedures.
Note: Call Technical Support at (570) 546-9663 if you need help during the installation process.
DO NOT modify or alter this cutterhead to make it fit other makes or models of plan­ers for which it is not designed. Doing so could result in property damage or serious personal injury.
Tip: Place the wrapped cutterhead in a freez-
er overnight before installing a new bearing. This will cause the cutterhead metal to con­tract, making the bearing easier to install.
2. Install a new bearing on the cutterhead by gently tapping it using a mallet and 4" length of 1" inside diameter copper pipe, as shown in Figure 12.
IMPORTANT: Copper pipe should ONLY
contact the inside race of the bearing! Failure to comply will result in damage to bearing.
Cutterhead
Shaft
Contact Inside
Bearing Race
ONLY
1" ID Pipe
(cut-away
for clarity)
We recommend that all gearbox seals and gas­kets are replaced before cutterhead installation, even if the seals or gaskets appear to be in good condition.
Before removing any seals, note their ori­entation and how far they are driven into the bore (typically the lip of a seal will face inward towards the oil reservoir or body of liquid). This will aid in the replacement process. Failure to comply may lead to fluid leakage and gearbox failure.
T32020/T32021 V-Helical Cutterheads
Cutterhead
Figure 12. Cutterhead bearing installation.
3. Install cutterhead in gearbox by fitting it into
place, and seat it by tapping on the pulley end with a wooden or rubber mallet. Verify cutterhead end is flush with inside face of gearbox bearing (see Figure 10 on Page 4).
4. Re-install helical gear and cap screw, ensur­ing helical gear and cutterhead are engaged.
5. Verify gasket surfaces are clean and free of oil, grit, or contaminants.
6. Re-assemble gearbox, taking care to align rubber gasket with gearbox covers.
7. Re-fill gearbox with new ISO 320 gear oil via fill plug shown in Figure 5 on Page 3.
-5-
8. Install cutterhead and gearbox assemblies into planer. Seat cutterhead shaft bearing by tapping on gearbox with a rubber or wooden mallet (see Figure 13). Verify face of new cutterhead bearing is flush with headstock casting.
12. Re-install gearbox cover, including both rear guards.
13. With cutterhead shaft keyway in an upright position, install cutterhead pulley key into keyway.
14. Slide cutterhead pulley onto shaft and secure with hex bolt and flat washers removed in Step 5 of Removing Existing Cutterhead on Page 2.
15. Remove protective cardboard and tape from cutterhead.
16. Re-install all belts and belt cover.
IMPORTANT: Adjust belt tension if it was
loosened in Step 4 of Removing Existing
Cutterhead on Page 2.
Figure 13. Seating cutterhead and gearbox
assemblies.
9. Secure gearbox in place using (5) cap screws and (1) ball knob removed in Step 21 of
Removing Existing Cutterhead on Page 4.
10. Rotate all sprocket shafts so keyways are in
a generally upwards position.
11. Re-install sprockets, keys, chains, and idler (see Figure 14). Fasten sprockets using washers and bolts removed in Step 11 of Removing Existing Cutterhead on Page 3.
Idler
17. Re-install all remaining covers and guards.
18. Follow procedures outlined in your planer
manual for adjustment and calibration of your planer before operating.
Accessories
T32014 —Indexable Carbide Inserts (10 Pack)
Replacement 15 x 15 x 2.5mm indexable carbide inserts for the Model T32020 15" and T32021 20" V-Helical Cutterheads.
Idler
Spring
Figure 14. Location of sprocket and chain com-
ponents (hex bolts and washers removed).
-6-
Figure 15. T32014 Indexable Carbide Inserts.
T32020/T32021 V-Helical Cutterheads
Replacing/Rotating Indexable Inserts
The Model T32020 15" and T32021 20" V-Helical Cutterheads are equipped with 4-sided indexable inserts. Each insert can be removed, rotated, and re-installed to use any of its four cutting edges. If one cutting edge becomes dull or damaged, simply rotate it 90º (see Figure 16) to use a sharp cutting edge.
Cutterhead inserts are extremely sharp. Wear heavy leather gloves to avoid the risk of serious personal injury.
To replace or rotate indexable inserts:
1. DISCONNECT MACHINE FROM POWER!
Reference Number
Figure 16. Rotating indexable inserts.
The inserts have a reference number on each corner. The position of the reference number on installed inserts can be used to track which edges are sharp/unused and which edges are dull or damaged. Replace inserts once reference num­ber has been rotated back to its original position.
Items Needed Qty
Safety Glasses (per person) ................... 1 Pair
Heavy Leather Gloves ............................ 1 Pair
Flat Hd Torx Screws M6-1 x 15 ....As Needed
Indexable Inserts (T3 2014) ............ As Needed
Phillips Head Screwdriver #2 ...................... 1
Flat Head Screwdriver 1⁄4" ............................ 1
Hex Wrenches 4, 5, 6mm ............................ 1
Torx Bit T-20 .................................................. 1
T-Handle Bit Driver 1⁄4" ................................... 1
Torque Wrench 0–50 in.-lb. ........................... 1
Clean Shop Rags .......................... As Needed
Degreaser ...................................... As Needed
Light Machine Oil ........................... As Needed
2. Put on heavy leather gloves to protect fingers and hands.
3. Remove top cover and dust port to expose cutterhead.
4. Remove belt cover to access V-helical cutterhead pulley.
5. Rotate pulley as needed to make inserts accessible for removal or rotation.
6. Remove any sawdust from head of indexable insert Torx screw.
7. Remove Torx screw and indexable insert.
8. Clean all dust and dirt off insert and cutterhead
pocket from which insert was removed, and replace insert so a fresh, sharp edge is facing outward.
Note: Proper cleaning is critical to achiev-
ing a smooth finish. Dirt or dust trapped between insert and cutterhead will slightly raise insert, and make noticeable marks on your workpieces the next time you cut.
9. Lubricate Torx screw threads with a light machine oil, wipe excess oil off threads, and torque Torx screw to 48-50 inch pounds.
Note: Excess oil may squeeze between insert
and cutterhead or in screw hole, thereby lifting insert or screw slightly and affecting work­piece finishes.
T32020/T32021 V-Helical Cutterheads
10. Re-install belt cover, dust port, and top cover.
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REF PART # DES CRIP TIO N REF PART # DES CRIP TIO N
Parts Breakdown & List
We do our best to stock replacement parts when possible, but we cannot guarantee that all parts shown are available for purchase. Call (800) 523-4777 or visit www.grizzly.com/parts to check for availability.
1
1-1
1-2
1-3
4
5
1 PT32020001 V-HELICAL CUTTERHEAD ASSEMBLY 15" (T32020) 1-2 PT32020001-2 CARBIDE INSERTS 15 X 15 X 2.5MM 10-PK 1 PT32021001 V-HELICAL CUTTERHEAD ASSEMBLY 20" (T32021) 1-3 PT32020001-3 FLAT HD TORX SCR T20 M6-1 X 15 1-1 PT32020001-1 V-HELICAL CUTTERHEAD 15" (T32020) 4 PT32020004 T-HANDL E B IT DRIVER 1 /4" 1-1 PT32021001-1 V-HELICAL CUTTERHEAD 20" (T32021) 5 PT32020005 TORX BIT T-20
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T32020/T32021 V-Helical Cutterheads
T32020/T32021 V-Helical Cutterheads
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