Wolfking C400 Frozen Block Grinder
MaxiGrind 400
Parts, Diagrams & Maintenance
Wolfking C250 replacement parts, technical diagrams, maintenance information and repair services from NPKUSA. We stock many C250 parts at our Ohio warehouse, including augers/worms, gearboxes, linings, knife housings, pilot bearings, knives, holeplates, precutters, Constant Flow Devices TURBO (CFD) and Bone Elimination System components.
NPK stocks most Wolfking C400 parts at our local warehouse in Columbus Ohio
If you do not find what you are looking for please contact us at 614-738-8208 as we work to add new items daily to our website.
Scroll Down or Select a Category to View Available Parts and Options
Click to go to Section
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Gearbox Parts and Repair Kits
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-
-
Maintenance of Worm/Auger
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Replacement of the Worm Pin
-
-
Maintenance of Driver Gear
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Maintenance of Knife Housing
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Replacement of the Knife Housing Key
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-
Maintenance of Lining
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Maintenance of Pilot Bearing
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Replacement of the Bushing
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Maintenance of Knife Hub
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-
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Grinding of Knives and Holeplates
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Grinding of Precutters
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400 Holeplates Minimum and Maximums
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400 Precutter Minimum and Maximums
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400 Knives Minimum and Maximums
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-
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How to Rebuild 125HP Gearbox (30861)
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Machine Breakout Diagram
Position
1
2
3
4
5
6
7
7
8
9
10
10
11
12
14
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
37
38
39
40
41
42
43
44
49
50
56
58
59
65
66
71
72
73
Description
Cabinet
Stainless nut M16
Screw cap (part of CFD)
Roller Bearing if Bushing 31246 is used
Blind screw M16x35
Set screw Ml
Leg H = 180
Lifting fitting
USAG tip key
Facet washer Ml 2
Stainless Allen MC M6x12
Pump housing 16 m3
Nut for clamp
Screw for knife housing key Allen MK M8x20
Stainless bolt M16x80
Facet washer M16
Tightening bolt M30x330
Suspension washer for motor bed ø80XØ16.5
Stainless nut M24
Retainer for clamp
Set screw Ml 2x25
Motor, 75HP, F2 (Right) 2-3/8" Shaft
Motor, 75HP, F1 (Left) 2-3/8" Shaft
Motor belt pulley Poly-V 32L 180 bored ø2.375"
Gear belt pulley Poly-V 32L 400 bored ø60
Belt Poly-V 930 L32
Machine shoes
Puller for sealing ring
Fitted bolt for clamps M16x80
Tightening ring 250/45
Safety guard w. Ferrogard switch
Wrench
Key for screw cap
Stainless nut M30
Brass washer ø62xø30.5x3
Constant Flow Device TURBO (CFD
Retaining pin 6x50
O-ring ø228 x 4 mm
O-ring ø309 x 4 mm
Plastic hammer
Bottom plate for cabinet
Stainless set screw M8x35
Stainless lock nut M8
Stainless washer M8
Bolted on door
Plug
Sensor for motor room door
Part Number
80400
22308
30897
31177
30906
22051
30965
31038
26990
22707
22605
32850
30396
22579
22146
22708
31229
34755
22310
35317
22034
WKI10030
WKI10031
301653
302455
24029
27874
33915
22146
30912
306879
39024
30390
306167
29925
22955
45376
45377
29696
47134
22200
22313
22723
313461
24572
14480 + 306653
Qty
1
1
1
1
4
1
1
1
1
1
1
1
1
1
4
4
4
4
2
1
1
4
4
1
2
1
4
8
1
1
2
1
1
4
1
8
2
16
1
1
1
1
1
4
1
4
1
1
1
1
4
4
1
2
1
1
1
1
2
2
2
1
2
1
Augers/Worms
Description
Worm,C250-S
Worm,C250-S for CFD
Worm,C250-L
Worm,C250-L for CFD
Worm,C250-S2T,Special,SS
Worm,C250-S2T,Carbon
Worm,C250-S2T,Cut Edges,SS
Worm,C250-S2T,Carbon
Part Number
30053
30303
30186
30202
48257
30189
30551
30019
Material
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Mild Steel
Stainless Steel
Mild Steel
L1
929
890
1189
1175
732
979
879
879
L2
153
110
153
110
153
153
153
153
Overall
1082
1026.6
1342
1285
885
1032
1032
1032
Pin
30024 or 322971
30228
30024 or 322971
30228
30024 or 322971
30019 or 30024
30024 or 322971
30024
Gearboxes
Description
Gearbox,75HP,C250
Gearbox,75HP,C250,Refurbished
Gearbox,75HP,C250,Used
Gearbox,75HP,C250,Extended
Gearbox,75HP,C250,Extended,Refurbished
Gearbox,75HP,C250,Extended,Used
Gearbox,75HP,C250(Replaced by 45087)
Gearbox,75HP,C250(Replaced by 45087)
Gearbox,50HP,C250
OEM #
45087
45087R
45087U
312879
312879R
312879U
30942
35676
30856
GEA #
500045087
5000404605
Gearbox Parts and Repair Kits
Position
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
18
19
20
21
22
23
24
25
26
28
29
30
31
32
33
34
35
36
37
38
Description
Driving shaft 19 teeth M4
Driving shaft
Toothed wheel 84 teeth M4
Gear housing, internal part
Gear housing, external part
Internal bearing cover
Shoulder bearing
External bearing cover
Spacer ring
Sealing ring, stainless
Scraper ring AS 115x125 //10
O—ring, synth. 149.5x3.0
Oil seal ring BA902 65x85x10
Single row roller bearing NJ 2313
Spherical roller bearing 22312
Single row roller bearing NJ311
Axial roller bearing 29317 E
Single row roller bearing NUIOI 7
Locking ring ext. 60 mm
Locking ring int. 120 mm
Locking ring ext. 75 mm
Locking ring int. 130 mm
Gasket "AB" C45K
Gasket "AA" C34K 18x1 20
Plug Galv. No. 291 1/2"
Allen MC CAD DIN MIOx70
Threaded rod ST60 Ø16 L=70 mm
Allen MC CAD DIN912 Ml
Stainless Allen MK DIN7991 M5x50
Set screw CAD DIN 933/8.8 m8x30
Facet washer CAD DIN. 125B MB
Set screw CAD DIN933/8.8 MIOx35
Facet washer CAD.DlN125B MIO
Retaining pin DINi481 black 6x80
Steel nut CAD DIN934/8 M16
Lock washer tv116
Seeger spring ring SBI 25
Oil seal 115x130x12, double lip
Repair Kits Available
Seal Kit, Pos. 12-29-10-11-37-38
Bearing Kit
Complete Rebuild Kit
45087 Part Number
30943
30944
30945
35677
30947
30948
30949
30950
30951
45088
23430
23234
23143
28055
25160
25132
25201
25133
24887
24865
24885
24854
24766
24353
22457
30042
22474
22566
22004
22705
22020
22706
22957
22276
28296
28353
23088
WKI10938
WKI10939
WKI10941
312879 Part Number
30943
312874
30945
35677
30947
30948
30949
30950
30951
140272
23430
23234
23143
28055
25160
25132
25201
25133
24887
24865
24885
24854
24766
24353
22457
30042
22474
22566
22004
22705
22020
22706
22957
22276
28296
28353
23088
312879KIT
312879RKIT
Qty
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
2
1
4
3
8
8
8
6
6
11
11
2
8
16
1
1
1
1
1
Linings
Description
Lining,C250-S,SS
Lining,C250L,SS,wH20 Fittings
Lining,C250L,SS
Lining,250-S2T,SS
OEM #
35293
38387
35292
35294
GEA #
500035293
500035292
500035294
Knife Housings
Description
Knife Housing,C250,SS,Non-BES
Knife Housing,C250,SS,Non-BES,Refurbished
Knife Housing,C250,SS,Non-BES,Used
Knife Housing,C250,SS,BES82
Knife Housing,C250,SS,BES82,Refurbished
Knife Housing,C250,SS,BES82,Used
Knife Housing,C250,SS,BES79
Knife Housing,C250,SS,for CCR
OEM #
30443
30443R
30443U
30205
30205R
30205U
31709
79-230
GEA #
Pilot Bearing
Description
Pilot Bearing,250,SS
Pilot Bearing,250,SS,Refurbished
Pilot Bearing,250,SS,Used
Pilot Bearing,250,SS,Speco BES
Pilot Bearing,250,SS,Speco BES,Refurbished
Pilot Bearing,250,SS,Speco BES,Used
Pilot Bearing,250,SS,Special (Cap NPK436)
Pilot Bearing,250,SS,Special,(Cap NPK436),Used
Pilot Bearing,250,SS,for Roller Bearing (31177)
Pilot Bearing,250,SS,for Roller Bearing,(31177), Refurbished
Pilot Bearing,250,SS,for Roller Bearing,(31177), Used
Pilot Bearing,250,SS without Roller Bearing
Pilot Bearing,250,SS
OEM #
30351
30351R
30351U
30351S
30351SR
30351SU
30351SS
30351SSU
31173
31173R
31173U
31174
367446
GEA #
500030351
500031173
5000036744
Bushing #
30033
30033
30033
109727
109727
109727
30033
30033
31246
31246
31246
Nut #
30005
30005
30005
109644
109644
109644
30005
30005
30005
30005
30005
Knives
Description
Propeller 3-Arm
Double Cut 8-Arm Knife Solid
Speco BC Double Cut 8-Arm Knife Solid
Double Cut 4-Arm Knife Solid
Speco BC Double Cut 4-Arm Knife Solid
Double Cut 6-Arm Knife Solid
Speco BC Double Cut 6-Arm Knife Solid
Double Cut 8-Arm Knife w/Insert (30061)
Speco BC Double Cut 8-Arm Knife w/Insert (30061)
Double Cut 4-Arm Solid Robot Knife
Speco BC 8-Arm Knife used w/Straight Groove Holeplates
Double Cut 4-Arm w/Inserts (30061)
Propeller 3-Arm w/Double Cutting Edges
Propeller 6-Arm
Propeller 4-Arm for CFD
Star Knife 4-Arm
Cutting Knife 4-Arm Extruder
Cutting Knife 6-Arm
OEM #
30008
30011
30011S
30011-4
30011-4S
30011-6
30011-6S
30012
30012S
30013
30015
31236
30010
30168
30014
34058
34219
GEA #
Speco #
103475
106364
13905
112122
105437
105087
107068
109817
Holeplates and Precutters
Description
Triumph 1.6mm Holes
Triumph 2.0mm Holes
Triumph 2.2mm Holes
Triumph 2.5mm Holes
Triumph 2.78mm Holes
Triumph 3.2mm Holes
Triumph 3.5mm Holes
Triumph 4.0mm Holes
Triumph 4.5mm Holes
Triumph 5.0mm Holes
Triumph 6.0mm Holes
Triumph 7.0mm Holes
Triumph 8.0mm Holes
Triumph 10.0mm Holes
Triumph 13.0mm Holes
Triumph 16.0mm Holes
Triumph 19.0mm Holes
Triumph 22.0mm Holes
Triumph 25.0mm Holes
Triumph 30.0mm Holes
Triumph 40.0mm Holes
Triumph 50.0mm Holes
Triumph Speco BC 2.0mm 3-Groove
Triumph Speco BC 2.5mm 3-Groove
Triumph Speco BC 3.2mm 3-Groove
Triumph Speco BC 4.0mm 3-Groove
Triumph Speco BC 5.0mm 3-Groove
Triumph Speco BC 6.0mm 3-Groove
Triumph Speco BC 8.0mm 3-Groove
Triumph Speco BC 10.0mm 3-Groove
Triumph 3 Kidney Holes (STDZAT)
Triumph 5 Kidney Holes (STDZAT)
Triumph 5 Kidney Holes
Triumph 7 Kidney Holes Fixed
Triumph 7 Kidney Holes
OEM #
31693
35071
30087
39029
30088
30089
35020
30090
30091
30092
30093
30094
30095
30096
30097
30098
30099
30100
31915
31913
30136
30888
30135
GEA #
Speco #
108103
105836
110131
102711
102596
106247
107554
103045
107906
102321
103294
108930
102839
106791
102519
103688
107975
110004
110164
108020
106845
109326
110203
109723
109615
109190
110246
110169
110001
110332
105199
108378
106738
107781
102345
Maintenance of C400
Maintenance of Worm/Auger
The worm pin is worn during operation, especially at the spot where it drives the knife.
The wear mark must nut exceed 1 mm in the depth; if this is the case, the pin must be rewelded and ground. Check the worm between two centres the pin must max. be shortened by 0.3 mm.
When operating with a worn worm pin, there will be the risk of damaging the knife hub, which will result in a total damage of the entire knife set.
Worm Type
S
S2T
d Nominal
310
225
d Minimum Hard Products
305
220
d Minimum Soft Products
307
not soft
The dimensions are only guiding and may vary from product to product.
It is important that the edge of windings is sharp.
Please contact NPK to receive a quote to repair or refurbish your Auger/Worm
It is recommended to purchase an extra worm, which can be used while the other is repaired. NPK offers New, Refurbished, Used and Loaners when available as options.
If the 4-edged driver is smaller than 119 x 119, it must be rewelded and ground.
H nominal = 119.5 x 119.5
H maximum = 119 x 119
The S surface needs to be even and without wear marks
D Nominal
354
354
D Minimum
344
344
The worm is worn under operation. Depending on the product to be processed it will sooner or later be necessary to renovate the worm.
Replacement of the Worm Pin
Please contact NPK to receive a quote to repair or refurbish your Auger/Worm
The worm pin is mounted with LOCKTITE 601 and secured with 2 keys. The keys are welded to the worm, as Shown on the drawing.
1. Grind away the welding.
2. The worm is hung op in the worm pin so that the worm is situated approx. 100 mm above the floor. Place a board between the worm and the floor.
3. Warm up the worm Pin evenly to approx. 2000 C. At this temperature the LOCKTITE will let go and the pin slides out.
4. Let the worm cool of and clean hole and key ways.
5. Mount the new pin with LOCKTITE 601.
6. Weld the keys as shown on the drawing.
7. Grind the weldings even.
Maintenance of Lining
The lining is worn during operation, and sooner or later it will be necessary to renovate it.
The edge turning towards the grinder trough should be kept sharp - see the above illustration. If the edge is not sharp, the power consumption will be increased, resulting in an increased load and wear on the gear and transmission.
Please contact NPK to receive a quote for parts or to replace your Lining. NPK Offers New and Refurbished Options. when available.
Lining Type
S
S2T
D Nominal
314
260
D Maximum Hard Products
319
265
D Maximum Soft Products
316
Not for Soft
D minimum is only to be seen as a guide line and will vary from product to product.
When operating with very wearing materials the life time may be increased by adding a layer Of hard metal.
Please contact NPK to receive a quote to repair or refurbish your Lining
The internal diameter Of the lining must be kept within certain limits, otherwise it will result in a fall of capacity.
Maintenance of Knife Housing
The knife housing key is worn during operation and from time to time it must be replaced.
The key will prevent the holeplates and pre-cutters from rotating. If the key is not in one piece, this will finally result in a washer rotating with the knife, giving metal chips in the product. In the worst case this will give a total damage of the knife set
Please contact NPK to receive a quote for parts or to replace your Knife Housing. NPK Offers New and Refurbished Options. when available.
Replacement of the Knife Housing Key
Please contact NPK to receive a quote to repair or refurbish your Knife Housing
1. Dismount the Screw.
2. Tap out the Key with a Screw Driver or another blunt object
3. Clean up the Keyway where the Key goes.
4. Insert the new Key.
5. Secure the screw with LOCKTITE 601.
Maintenance of Pilot Bearing
Size
400
A Nominal
115.8
A Minimum
115.3
B Nominal
136
B Minimum
136.5
SPECO BES Nut has different dimensions than stated above but the tolerance remains the same.
Replacement of Pilot Bearing Bushing
Please contact NPK to receive a quote for Parts
1. The bushing is mounted with LOCKTITE 601. Heat up the Pilot Bearing to approx. 200 C.
2. Pull Out the bushing.
3. Let the Pilot Bearing cool off.
4. Clean the Hole thoroughly.
5. Mount the new Bushing using LOCKTITE 601.
Grind only the side that turns toward the knife.
Surface Grinding
Knives, Holeplates and Precutters
NPK provides Surface Grinding, please reach out for quote
To achieve the proper result, the surface grinder chuck must be completely clean and in proper working condition.
Do not use a too high feeding, as this will give unnecessary heat generation, causing oblique parts.
Grinding of Knives and Holeplates
-
Grind one side until it is clean.
-
Turn the part and grind the other side, until it is clean.
-
Turn the part once more and grind the first side once more.
-
The part is now finished.
-
Control the dimensions according to the pictures.
Grinding of Precutters
-
Grind only the side that turns toward the knife.
Control the dimensions in six places for the Holeplate and Precutter and two places on each knife arm as shown. Maximum difference in dimensions: 0.02 mm and thinnest at the center.
400 Holeplates Minimum and Maximums
Type
400
T Nominal
25
T Minimum Hard Products
15-20
T Minimum Soft Products
15
T-minimum is only to be seen as guiding and will vary from product to product .
The thinner the holeplate is, the more it will tend to bend out because of the pressure, which will give a bad cutting and an increased wear of both holeplate and knife.
The smaller the holes are In the holeplate, the higher the pressure will be.
When using a double knife set, you have to control that the knife hubs do not touch each other, as this will make it impossible to tighten the knife set.
400 Precutter Minimum and Maximums
Type
400/5 Loose
400/5 Fixed
400/9 Fixed
4000/10 Loose
OEM Number
30138
35534
30139
30140
T Nominal
26
38
38
38
T Minimum Hard Products
20
28.5
28.5
28.5
T Minimum Soft Products
13
19
19
19
400 Knives Minimum and Maximums
Type
Propeller A
Propeller B
Propeller A
Propeller B
Cut
Knife
Star
Blades
4
4
6
6
8
4
4
OEM Number
30170
30172
30160
30161
30171
30376
30375
T Nominal
38
38
42
42
42
32
36
T Minimum
34
34
36
36
36
24
31
Knives with loose inserts: The inserts cannot be ground and must be replaced.
T-minimum is only a guide and may vary from product to product . The ground surface of the insert has to lay min. 1 mm above the knife body
Replacement of Seals at the Driver Shaft
Please contact NPK for Parts or assistance
NPK has a Tool to help with Assembly (OEMPN45088TOOL)
-
Remove the 9 Allen screws MK5x50, key width 3.
-
In 3 of the holes an M6 thread has been cut for dismounting. Screw 3 M6x80 set screws in the thread holes and tighten the screws by turns whereby the holder is pressed out.
-
Dismount the sealing rings.
-
Clean the holder and mount new sealing rings. Note that ring no. 1 has to turn the lip towards the worm and that ring no. 2 has to turn the lip towards the gear.
-
Lube the sealing rings and the chamber between the seals with FMI grease.
-
Clean the driver shaft and control that the surface where the sealing touches the shaft is smooth and without grooves. If there are any grooves deeper than 0.2 mm, the shaft has to be replaced.
-
Mount the holder.
Additional Breakout Diagrams
Crane and Hoist (Part Number 38456)
Position
1
1a
2
3
4
5
7
7
7
7
Description
Crane arm (Max 100kg/220lbs)
Crane Rating Sticker
Bracket for crane
Travelling trolley
Toothed wheel tackle (Max 500lbs)
Etronax washer
Chain Hoist (1/2 Ton)
Chain Hoist (1 Ton)
Chain Hoist, Stainless Steel (1/2 Ton)
Chain Hoist, Stainless Steel (1 Ton)
Qty
1
1
1
1
1
1
1
1
1
1
Part Number
32310-45
NPK356
38455
32512
25610SS
37939
25610
25610-1
25610SS
25610SS-1
Safety Step (Part Number 38275)
Position
1
2
3
4
5
6
7
8
9
10
11
12
Description
Frame
Hinge
Washer M12
Curve
Step
Set screw M10x20
Nut MIO
Set screw M12x35
Self—locking nut M12
Bearing
Plate washer 12/25
Switch AT 11A-I-I
Qty
1
1
1
1
1
1
1
1
1
1
1
1
Part Number
38072
80013
22725
38276
38275
22018
22306
22224
22315
28493
25460
14304
Lubrication System (Part Number 30045)
Position
1
2
3
4
5
6
7
8
9
Description
Oil Tank
Connection, Straight Screwed 1/2X1/2
1/2"x1/2" Angle
Oil Plug
Tee,1/2in Galvanized
Ring, Sealing f/Oil Tank
Glass, Oil Level 1-1/4" Alum
End Socket 1-1/4"
Hose, Nylon 10 I.D. White
Qty
1
2
2
1
1
1
1
1
1.5M
Part Number
30046
24502
24503
28430
24303
30047
25409
24366
24967
Safety Guard (Part Number 306656)
Position
1
2
3
4
5
Description
Safety Guard
Nut M16 SS
Fittings for Safety Switch w/Arm
Fittings for Safety Switch
Safety Switch
Qty
1
1
1
1
1
Part Number
313042
22308
306878
306654
14480
Clamp (Part Number 35330)
Position
1
2
3
Description
Clamp
Shaft for Threaded Piece of Clamp
Threaded Piece for Clamp
Clamp Ring Nut for Tightening
Qty
1
1
1
1
Part Number
1873
80355
31672
30396
Dismounting Tools
Position
1
2
3
Description
T-Key
Hook Spanner
Wrench, 46mm
Qty
1
1
1
Part Number
26990
30390
39024
