Model > T-8421A > J1. Rotary hook mechanism (T-8421A)
REF-NO QTY RM CODE NAME OF PARTS
 For"-□□3,-□□F" 
1 1 SA2755101 ROTARY HOOK BASE ASSY,842ST(L)
  
 For"-□□5" 
1 1 SA2950101 ROTARY HOOK BASE ASSY,842ST-5L
  
2 1 SA3961001 PIPE
3 1 SA4029001 ROTARY HOOK SHAFT BUSH
4 1 S09260001 THRUST RING, A: 1.2MM < t=1.2 >
4 1 SA4038001 THRUST RING < t=1.0 >
4 1 S09261001 THRUST RING, B: 1.4MM < t=1.4 >
5 1 S07420000 NEEDLE BEARING
6 1 S07419001 RETAINING RING
7 1 SA2557001 ROTARY HOOK SHAFT BUSH
8 1 SA3856001 OPENER LINK
9 1 SA3859001 OPENER LEVER
10 1 SA2560001 SHAFT, O-LINK
11 1 025710132 WASHER, PLAIN S 4.76
12 1 021500316 NUT 3 M5
13 1 SA3889001 O-LEVER SHAFT
14 1 SA4026001 WICK, 4X4 L=100
15 1 012500536 SET SCREW SOCKET (FT) M5X5
16 1 S38212001 OPENER
17 1 154965001 BOLT, SOCKET SM3.57X8
18 1 SA2562101 ROTARY HOOK BASE COVER, L
19 4 062300612 SCREW PAN M3X6
20 1 SA2572001 SPIRAL GEAR SCREW ASSY
21 2 SA2574001 SET SCREW, (FT) M6
22 1 SA2575001 SET SCREW (FT) M6
23 1 SA2576001 PINION GEAR SCREW ASSY
24 3 SA2575001 SET SCREW (FT) M6
25 1 SA3054001 THRUST WASHER, L
26 1 SA4042001 FELT UL ASSY
27 1 062400616 SCREW PAN M4X6
28 1 SA4044001 FELT DL ASSY
29 1 062400616 SCREW PAN M4X6
30 1 SA4012001 FELT
31 1 SA3894001 FELT SUPPORT
32 1 062400616 SCREW PAN M4X6
  
 For"-□□3,-□□F" 
33 1 SA2757100 ROTARY HOOK BASE ASSY,842ST(R)
  
 For"-□□5" 
33 1 SA2950101 ROTARY HOOK BASE ASSY,842ST-5L
  
2 1 SA3961001 PIPE
3 1 SA4029001 ROTARY HOOK SHAFT BUSH
4 1 S09260001 THRUST RING, A: 1.2MM < t=1.2 >
4 1 SA4038001 THRUST RING < t=1.0 >
4 1 S09261001 THRUST RING, B: 1.4MM < t=1.4 >
5 1 S07420000 NEEDLE BEARING
6 1 S07419001 RETAINING RING
7 1 SA2557001 ROTARY HOOK SHAFT BUSH
8 1 SA3856001 OPENER LINK
9 1 SA3859001 OPENER LEVER
10 1 SA2560001 SHAFT, O-LINK
11 1 025710132 WASHER, PLAIN S 4.76
12 1 021500316 NUT 3 M5
13 1 SA3889001 O-LEVER SHAFT
14 1 SA4026001 WICK, 4X4 L=100
15 1 012500536 SET SCREW SOCKET (FT) M5X5
16 1 S38212001 OPENER
17 1 154965001 BOLT, SOCKET SM3.57X8
34 1 SA2563101 ROTARY HOOK BASE COVER, R
19 4 062300612 SCREW PAN M3X6
20 1 SA2572001 SPIRAL GEAR SCREW ASSY
21 2 SA2574001 SET SCREW, (FT) M6
22 1 SA2575001 SET SCREW (FT) M6
23 1 SA2576001 PINION GEAR SCREW ASSY
24 3 SA2575001 SET SCREW (FT) M6
35 1 SA2579001 SPECER
36 1 SA4043001 FELT UR ASSY
27 1 062400616 SCREW PAN M4X6
37 1 SA4045001 FELT DR ASSY
29 1 062400616 SCREW PAN M4X6
30 1 SA4012001 FELT
31 1 SA3894001 FELT SUPPORT
32 1 062400616 SCREW PAN M4X6
  
38 1 SA3988001 ROTARY HOOK BASE COVER, FL
39 1 SA3916001 ROTARY HOOK BASE COVER, FR
40 4 SA2825001 SCREW, M3X12
41 2 SA2556001 SCREW, M6X25
42 2 115947001 WASHER PLAIN 6.35
43 2 SA2722001 PINCH SLEEVE A
44 2 SA2565001 PINCH SLEEVE B
45 2 SA2556001 SCREW, M6X25
46 2 SA2567001 NEEDLE UPPER POSITIONING PLATE
47 2 SA2568001 NEEDLE UPPER POSITIONING SHAFT
48 4 062061016 SCREW PAN M6X10
49 4 025060136 WASHER PLAIN S 6
50 2 S01928151 BOBBIN
  
 <OPTION PARTS>For dry type 
51 2 SA2827001 OPENER LINK ASSY
52 2 SA2558001 OPENER LINK
53 2 S58900000 SCREW M2
54 2 062400416 SCREW, PAN M4X4
  • A. Machine body
  • B. Upper shaft mechanism
  • C. Needle bar rocking mechanism
  • D. Presser foot mechanism
  • E. Feed mechanism
  • F. Quick reverse mechanism
  • G. Quick reverse switch mechanism
  • H. Feed shaft mechanism
  • J1. Rotary hook mechanism (T-8421A)
  • J2. Rotary hook mechanism (T-8422A)
  • J3. Rotary hook mechanism
  • K. Gauge parts
  • L. Lower shaft mechanism
  • M. Tension release mechanusm (T-8422A)
  • N. Lubrication
  • P. Threading mechanism
  • Q. Bobbin winder mechanism
  • R. Thread trimmer mechanism
  • S. Thread wiper mechanism (T-8422A)
  • T1. Control box & motor mechanism
  • T2. Control box mechanism
  • U. Power supply equipment mechanism
  • V. Presser foot lifting solenoid set (Option parts)
  • Z1. Accessories
  • Z2. Accessories
  • Wa. Warning labels
  • Sp1. Different parts list (T-8421A)
  • Sp2. Different parts list (T-8422A)
  • Ga1-1. Gauge parts list (T-8421A For Normal)
  • Ga1-2. Gauge parts list (T-8421A For foundation)
  • Ga1-3. Gauge parts list (T-8421A For sewing without material)
  • Ga1-4. Gauge parts list (T-8421A For light materials)
  • Ga1-5. Gauge parts list (T-8421A For heavy materials)
  • Ga1-6. Gauge parts list (T-8421A For extra heavy materials)
  • Ga1-7. Gauge parts list (T-8421A For extra light materials)
  • Ga1-8. Gauge parts list (T-8421A Option parts)
  • Ga1-9. Gauge parts list (T-8421A For drop Feed)
  • Ga1-10. Gauge parts list (T-8421A For shirt fronts)
  • Ga2-1. Gauge parts list (T-8422A For Normal)
  • Ga2-2. Gauge parts list (T-8422A For sewing without material)
  • Ga2-3. Gauge parts list (T-8422A For heavy materials)
  • Ga2-4. Gauge parts list (T-8422A For extra light materials)
  • Ga2-5. Gauge parts list (T-8422A For Drop Feed)
  

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