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12.1.2

   JTM-1254VS Upper Head Assembly – Parts List 

Index No  Part No 

Description 

Size 

Qty 

1 ................ JTM1254VS-A01 ....... Upper Pulley Housing ..............................................  ...................................... 1 
2 ................ JTM1254VS-A02 ....... Motor Disc - Upper ..................................................  ...................................... 1 
3 ................ TS-1523011 .............. Set Screw ................................................................ M6x6L ........................... 4 
4 ................ JTM1254VS-A04 ....... Belt ..........................................................................  ...................................... 1 
5 ................ JTM1254VS-A05 ....... Motor Disc - Lower...................................................  ...................................... 1 
7 ................ 6295247 .................... Key .......................................................................... 7x7x25L ........................ 1 
8 ................ JTM1254VS-A08 ....... Spring ......................................................................  ...................................... 1 
9 ................ JTM1254VS-A09 ....... Washer ....................................................................  ...................................... 1 
10 .............. BB-6204ZZ ................ Ball Bearing ............................................................. 6204ZZ ......................... 1 
11 .............. JTM1254VS-A11 ....... Pulley Cover ............................................................  ...................................... 1 
12 .............. TS-1503041 .............. Hex Socket Cap Screw ............................................ M6x16L ......................... 4 
13 .............. JTM1254VS-A13 ....... Upper Cover ............................................................  ...................................... 1 
14 .............. TS-1503041 .............. Hex Socket Cap Screw ............................................ M6x16L ....................... 10 
15 .............. BB-6009ZZ ................ Ball Bearing ............................................................. 6009ZZ ......................... 1 
16 .............. JTM1254VS-A16 ....... Dial Housing ............................................................  ...................................... 1 
17 .............. TS-1503071 .............. Hex Socket Cap Screw ............................................ M6x30L ......................... 4 
18 .............. TS-1523051 .............. Set Screw ................................................................ M6x16L ......................... 2 
19 .............. JTM1254VS-A19 ....... Bushing ....................................................................  ...................................... 1 
20 .............. JTM1254VS-A20 ....... Spacer .....................................................................  ...................................... 1 
21 .............. JTM1254VS-A21 ....... Worm .......................................................................  ...................................... 1 
22 .............. JTM1254VS-A22 ....... Worm Gear  .............................................................  ...................................... 1 
23 .............. 5301041 .................... Spring Pin ................................................................ Ø5x10L ......................... 2 
24 .............. JTM1254VS-A24 ....... Bushing ....................................................................  ...................................... 2 
25 .............. JTM1254VS-A25 ....... Shaft ........................................................................  ...................................... 1 
26 .............. 5302611 .................... Spring Pin ................................................................ Ø3x12L ......................... 1 
27 .............. JTM1254VS-A27 ....... Handwheel ...............................................................  ...................................... 1 
 .................. JTM1254VS-A27A .... Handwheel Assembly (includes #18,27,28) ............  ...................................... 1 
28 .............. JTM1254VS-A28 ....... Handle .....................................................................  ...................................... 1 
29 .............. JTM1254VS-A29 ....... Chain Axle ...............................................................  ...................................... 1 
30 .............. 5509313 .................... Spring Pin ................................................................ Ø4x16L ......................... 2 
31 .............. GA7X-865 ................. Spring Pin ................................................................ Ø3x25L ......................... 1 
32 .............. JTM1254VS-A32 ....... Chain .......................................................................  ...................................... 1 
33 .............. JTM1254VS-A33 ....... Screw .......................................................................  ...................................... 1 
34 .............. JTM1254VS-A34 ....... Spacer .....................................................................  ...................................... 1 
35 .............. JTM1254VS-A35 ....... Pin ...........................................................................  ...................................... 1 
36 .............. JTM1254VS-A36 ....... Adjustable Plate .......................................................  ...................................... 1 
37 .............. JTM1254VS-A37 ....... Shift Sleeve .............................................................  ...................................... 2 
38 .............. 6294761 .................... Key .......................................................................... 6x6x45L ........................ 1 
39 .............. JTM1254VS-A39 ....... Bottom Pin ...............................................................  ...................................... 1 
40 .............. 5307431 .................... Spring Pin ................................................................ 3/32"x3/4"...................... 1 
41 .............. JTM1254VS-A41 ....... Flat Washer ............................................................. Ø8.5 .............................. 1 
42 .............. JTM1254VS-A42 ....... Bearing Housing ......................................................  ...................................... 1 
43 .............. BB-6010ZZ ................ Ball Bearing ............................................................. 6010ZZ ......................... 2 
44 .............. JTM1254VS-A44 ....... Spindle Disc - Upper ................................................  ...................................... 1 
45 .............. JTM1254VS-A45 ....... Spindle Disc - Lower ................................................  ...................................... 1 
 .................. JTM1254RVS-A44A .. Spindle Disc Assembly (Upper/Lower) ....................  ...................................... 1 
47 .............. JTM1254VS-A47 ....... Brake Lining .............................................................  ...................................... 1 
48 .............. JTM1254VS-A48 ....... Lock Collar ...............................................................  ...................................... 1 
49 .............. JTM1254VS-A49 ....... Spring ......................................................................  ...................................... 1 
50 .............. JTM1254VS-A50 ....... Brake Seat ...............................................................  ...................................... 1 
51 .............. TS-1504041 .............. Hex Socket Cap Screw ............................................ M8x20L ....................... 10 
52 .............. JTM949EVS-A53 ...... Brake Sleeve ...........................................................  ...................................... 1 
53 .............. JTM949EVS-A54 ...... Spindle Brake Shaft .................................................  ...................................... 1 
54 .............. JTM949EVS-A56 ...... Spindle Brake Lever Pivot .......................................  ...................................... 1 
55 .............. TS-1503071 .............. Hex Socket Cap Screw ............................................ M6x30L ......................... 1 
56 .............. JTM1254VS-A56 ....... Spindle Brake Lever ................................................  ...................................... 1 
57 .............. JTM949EVS-A50 ...... Brake Lever Knob .................................................... 3/8" ................................ 1 
58 .............. JTM1254VS-A58 ....... Hand Rod ................................................................  ...................................... 1 
59 .............. JTM1254VS-A59 ....... Brake Bracket ..........................................................  ...................................... 1 
60 .............. JTM949EVS-A46 ...... Retaining Ring ......................................................... STW8 ............................ 1 

Содержание JTM-1254RVS

Страница 1: ...Parts Manual Variable Speed Turret Mill Models JTM 1254VS and JTM 1254RVS JET 427 New Sanford Road LaVergne Tennessee 37086 Part No M 690025 Ph 800 274 6848 Edition 5 08 2019 www jettools com Copyrigh...

Страница 2: ...e extreme caution and replace the guards immediately after completion of maintenance 14 Check damaged parts Before further use of the machine a guard or other part that is damaged should be carefully...

Страница 3: ...Familiarize yourself with the following safety notices used in this manual This means that if precautions are not heeded it may result in minor injury and or possible machine damage This means that i...

Страница 4: ...operation changing tooling 15 8 17 Clamping workpiece to table 16 9 0 Adjustments 16 9 1 Mill head left right adjustment 16 9 2 Positioning ram 17 9 3 Gib adjustment 17 9 4 Power feed trip lever mecha...

Страница 5: ...ervice 51 3 0 About this manual This manual is provided by JET covering the safe operation and maintenance procedures for the JET Model JTM 1254VS and JTM 1254RVS Turret Mill This manual contains inst...

Страница 6: ...190mm Collet Capacity 1 8 1 in 1 8 1 in Ram Travel maximum 20 4 in 518mm 20 4 in 518mm Table and Knee Table Size 12 x 54 in 305 x 1372mm 12 x 54 in 305 x 1372mm Longitudinal Table Travel maximum 28 1...

Страница 7: ...7 4 1 Machine dimensions JTM 1254VS and JTM 1254RVS Figure 4 1 Installation Diagram...

Страница 8: ...8 4 2 Overview and terminology JTM 1254VS and JTM 1254RVS Figure 4 2 Overview...

Страница 9: ...hine table Compare items with section 5 1 3 Install provided lifting ring into tapped hole atop ram Note If your mill came with a top mounted DRO remove DRO from hole to install lifting ring Reinstall...

Страница 10: ...awbar with spacer installed into spindle center through top of machine 17 Slide fine feed handwheel onto handwheel hub and push until its roll pin engages hole in hub and handwheel is flush with hub s...

Страница 11: ...ree seconds to force feed oil The lubricator remains active as long as milling machine is turned on To turn off lubricator while mill is on use top switch C Remember to turn lubricator on before opera...

Страница 12: ...motor or gear mechanism However it is recommended that switch be placed at neutral position and spindle allowed to come to a stop then switch moved to opposite direction B Coolant switch Turns on and...

Страница 13: ...er feed worm gear whenever power feed is not required This avoids unnecessary wear on worm gear Do not move Quill Power Feed Lever unless motor is at complete stop spindle off D Figure 8 1 When changi...

Страница 14: ...fine feed handwheel B Figure 8 7 back and forth to aid engagement If spindle is rotating clockwise in is downfeed out is upfeed If spindle rotation is counterclockwise out is downfeed in is upfeed Neu...

Страница 15: ...setting Feed Direction Knob C position per Table 3 Spindle Direction Feed Direction Knob Position CW Down In Up Out CCW Down Out Up In Table 3 9 Place Quill Feed Engagement Lever L in Engaged position...

Страница 16: ...Figure 9 1 2 Turn worm nut B Figure 9 1 to tilt head left or right as required Use scale on ram adapter to set desired angle Note Scales on ram adapter and for head rotation are guides only Close tol...

Страница 17: ...turn should be sufficient to allow turret to move Note Use gentle hand pressure to avoid rapid movement 2 Turn ram until spindle is in desired position Use scale on turret for degree measurement 3 Ti...

Страница 18: ...acklash adjustment Refer to Figure 9 6 The milling machine table is moved by a lead screw and nut for each machine axis For proper operation there must be clearance between lead screw and nut which re...

Страница 19: ...19 Figure 9 6...

Страница 20: ...arings and back gear mechanism Refer to Figures 10 1 through 10 4 for lubrication requirements and access points Key Description Recommended Lubricant Action A Spindle bearing oil cup Mobil DTE Oil Li...

Страница 21: ...30 40 45 90 Malleable iron 37 45 45 90 Steel soft 60 90 75 105 Steel medium 454 67 52 75 Steel hard 24 37 55 75 Cast steel 24 30 55 75 Aluminum 240 300 300 360 Brass 105 180 150 300 Bronze 52 75 75 9...

Страница 22: ...22 12 1 1 JTM 1254VS Upper Head Assembly Exploded View...

Страница 23: ...mbly includes 18 27 28 1 28 JTM1254VS A28 Handle 1 29 JTM1254VS A29 Chain Axle 1 30 5509313 Spring Pin 4x16L 2 31 GA7X 865 Spring Pin 3x25L 1 32 JTM1254VS A32 Chain 1 33 JTM1254VS A33 Screw 1 34 JTM12...

Страница 24: ...ring Pin 3x20L 1 89 JTM949EVS A04 Hi Lo Detent Plate 1 90 JTM949EVS A05 Sleeve 1 91 JTM949EVS A06 Spring 1 92 JTM949EVS A08 Hi Lo Pinion Block 1 93 TS 1502031 Hex Socket Cap Screw M5x12 2 94 JTM949EVS...

Страница 25: ...escription Size Qty 132 TS 1502041 Hex Socket Cap Screw M5x16L 3 133 LM000005 Speed Range Label 1 134 JTM949EVS A91 Push Plate 1 135 JTM949EVS A92 Limit Switch 1 136 LM000182 Motor Label 1 137 JET 165...

Страница 26: ...26 12 2 1 JTM 1254RVS R8 Upper Head Assembly Exploded View...

Страница 27: ...embly includes 18 27 28 1 28 JTM1254RVS A28 Handle 1 29 JTM1254RVS A29 Chain axle 1 30 5509313 Spring Pin 4x16L 2 31 GA7X 865 Spring Pin 3x25L 1 32 JTM1254RVS A32 Chain 1 33 JTM1254RVS A33 Screw 1 34...

Страница 28: ...ion Shaft 1 88 B 56 Spring Pin 3x20L 1 89 JTM949EVS A04 Hi Lo Detent Plate 1 90 JTM949EVS A05 Sleeve 1 91 JTM949EVS A06 Spring 1 92 JTM949EVS A08 Hi Lo Pinion Block 1 93 TS 1502031 Hex Socket Cap Scre...

Страница 29: ...escription Size Qty 132 TS 1502041 Hex Socket Cap Screw M5x16 3 133 LM000005 Speed Range Label 1 134 JTM949EVS A91 Push Plate 1 135 JTM949EVS A92 Limit Switch 1 136 LM000182 Motor Label 1 137 JET 165...

Страница 30: ...30 12 3 1 JTM 1254VS Lower Head Assembly Exploded View...

Страница 31: ...ear 1 23 JTM1254VS B23 Bevel Gear Shaft 1 23 1 KF2R4445 Key 4x4x45L 1 24 JTM1254VS B24 Bevel Gear Bushing 1 25 JTM1254VS B25 Spacer 1 26 JTM1254VS B26 Feed Drive Gear TA2620Z 1 27 JTM1254VS B27 Bushin...

Страница 32: ...S B71 Feed Trip Bracket 1 72 JTM1254VS B72 Handwheel Clutch 1 73 5302731 Set Screw M8x6L 1 74 ETW6 Retaining Ring ETW6 1 75 JTM1254VS B75 Feed Reverse Stud 1 JTM1254VS B75A Feed Reverse Stud Assembly...

Страница 33: ...Set Screw M6x16L 1 109 TS 2311061 Hex Nut M6 1 110 STW22 Retaining Ring STW22 1 111 TS 1521071 Set Screw M4x20L 1 112 TS 1540021 Hex Nut M4 1 113 TS 1502051 Hex Socket Cap Screw M5x20L 1 114 TS 15400...

Страница 34: ...34 12 4 1 JTM 1254RVS R8 Lower Head Assembly Exploded View...

Страница 35: ...Indicator Rod 1 26 JTM949EVS B26 Indicator Rod Screw 1 27 JTM949EVS B27 Upper Bushing 1 28 JTM949EVS B28 Cluster Gear 1 29 KF2R4445 Key 4x4x45 1 31 JTM949EVS B31 Bevel Gear Shaft 1 32 STW16 Retaining...

Страница 36: ...er 1 98 STW10 Retaining Ring STW10 1 99 JTM949EVS B99 Clutch Arm Cover 1 100 TS 1523051 Socket Set Screw M6x16 1 101 TS 2311061 Hex Nut M6 1 102 5625391 Spring Pin 5x16 1 103 JTM949EVS B103 Cam Rod 1...

Страница 37: ...Lever 1 146 JTM949EVS B146 Trip Lever Pin 1 147 KF2R5525 Key 5x5x25 1 148 JTM949EVS B148 Quill Lock Sleeve 1 148 1 JTM949EVS B148 1 Spring 1 149 JTM949EVS B149 Lock Handle M8 1 150 TS 1533032 Pan Head...

Страница 38: ...38 12 5 1 JTM 1254VS Base Machine Exploded View...

Страница 39: ...Ram Cover 1 22 JTM1254VS C22 Strainer Net 2 23 JTM1254VS C23 Elevating Screw Housing 1 23 1 TS 1505071 Hex Socket Cap Screw M10x45L 2 24 JTM1254VS C24 Elevating Nut Inch 32 x 5 tpi 1 24 1 TS 1503051 H...

Страница 40: ...k Handle M12x25L 4 67 1 JTM1254VS C67 1 Table Lock Plunger 1 1 67 2 JTM1254VS C67 2 Table Lock Plunger 2 1 68 JTM1254VS C68 Gib 1 70 JTM1254VS C70 Chip Guard Bottom 680 mm 129x2 0T 1 71 JTM1254VS C71...

Страница 41: ...41 12 6 1 JTM 1254RVS R8 Base Machine Exploded View...

Страница 42: ...JTM1254VS C23 1 Hex Socket Cap Screw M10x45L 2 24 JTM1254VS C24 Elevating Nut Inch 32 x 5 Tpi 1 24 1 TS 1503051 Hex Socket Cap Screw M6x20L 6 25 JTM1254VS C25 Lead Screw Inch 35x5 Tpi 590 1 26 KF2R552...

Страница 43: ...C73 Knee Support Plate Right 1 74 JTM1254VS C74 Knee Support Plate Left 1 75 JTM1254VS C75 Gib 1 76 JTM1254VS C76 Hex Socket Cap Screw M14x35L 10 77 JTM1254RVS C77 Lock Stud 1 78 JTM949EVS C06 Adapter...

Страница 44: ...ring 6204ZZ 5 10 JTM949EVS D10 Bearing Bracket 60 2 11 5311251 Spring Pin 5x30 6 12 TS 1505011 Hex Socket Cap Screw M10x16 16 13 KF2R3325 Key 3x3x25 3 14 JTM1254VS D14 Lead Screw 32 x 5 tpi 1632 1 15...

Страница 45: ...t M5 4 10 TS 1550031 Flat Washer 5 4 11 JTM949EVS E12 Handle 1 12 TS 2245162 Socket Head Button Screw M5x16 4 JTM949EVS E14 Support Rod Unit Assembly includes 13 13 1 13 2 16 20 23 1 13 JTM1254VS E13...

Страница 46: ...TM949EVS F15 Terminal Block 1 11 JTM949EVS F21 Switch Bracket 1 12 JTM949EVS F05 1 Switch Interface 1 QS1 JTM949EVS F05 Door Switch includes 12 1 TC1 JTM949EVS F06 Transformer 400VA 1 KM1 JTM1254VS FK...

Страница 47: ...ck 1 5 JTM949EVS G07 Hose Fitting PT 3 8 x 1 2 90 1 6 JTM949EVS G06 Hose 1 2 1 7 JTM949EVS G07 Hose Fitting PT 3 8 x 1 2 90 1 8 JTM949EVS G08 Hose Clamp 5 6 11 20 2 9 JTM949EVS G09 Coolant Pump 1 8HP...

Страница 48: ...2101 Hex Socket Cap Screw M5x45 2 2 JTM949EVS H02 Support Plate 1 3 TS 2245102 Socket Head Button Screw M5x10 2 4 JTM949EVS H04 Bushing Bracket Re JTM949EVS H04A 1 JTM949EVS H04A Bushing Bracket Assem...

Страница 49: ...2L 0 180min 1 2 TS 1503061 Hex Socket Cap Screw M6x25L 2 3 JTM949EVS J03 Flexible Steel Tube 4 1 4 JTM949EVS J04 Elbow Adaptor 4 3 5 JTM949EVS J10 Oil Distributor 4 6 holes 2 6 JTM949EVS J06 Flexible...

Страница 50: ...50 13 0 Electrical Connections JTM 1254VS RVS 13 1 230V Wiring Diagram 13 2 460V Wiring Diagram...

Страница 51: ...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...

Страница 52: ...52 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...

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