SJC Series. Zero Backlash Jaw Coupling. Features. Sleeve

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1 SI. CO mark(trademark : ) indicates that the authenticity is certified. SJC (Trademark : ) is the original trademark for SUNGIL s Jaw Coupling. SUNGIL s Jaw coupling has a unique hub and sleeve structure, so it has maximized the advantages of zero backlash metallic coupling and common coupling with rubber elastic material. Features Structure is manufactured with preload on Zero backlash (low operational torque environment) Excellent durability and torsional stiffness Absorbs parallel and angular misalignment and vibration through Identical CW and CCW rotational Out Diameter SizeØ14~Ø30 Out Diameter SizeØ40 Out Diameter SizeØ55~Ø100 Application Position controllingpositioning Robot system Boring and grinding machine Machining center (machine tool) Medical equipment Servo Motor XY and XYZ axle driving Reduction geared motor characteristics Oil resistance, electric insulation Operational temperature: 30 ~80 Several holes are machined hub's inside surface for the wellbalanced product SUNGIL's sleeve is different from other sleeves because the center is nonpenetrativbe. The teeth are made in a from shape by considering the dimensions (tolerance) of them very carefully, so there is no clearance and backlash on operation There is penetrative sleeve that is machined after molding for easy assembly Structure & Material SET SCREW TYPE S : Distance that absorbs axialdirection impact. Sungil s Jaw coupling is assembled with special tools for the uniform distance. : Thermoplastic Elastomer Hub : High strength aluminum alloy, Surface treatment:alumite CLAMP TYPE S : Distance that absorbs axialdirection impact Clamping: SCM435 (Stainless bolt is available) SRB Series SOH Series SD Series SHD Series SRG Series SCJ Series SFC Series SHR Series SUNGIL MACHINERY 37

2 Selection Method SJC coupling has 2 different usages. One for transmitting angular rotation with zero backlash and another for transmitting extremely high torque. Choose the appropriate coupling because we have 2 different sleeves with different physical characteristics. 1. To transmit rotation with zero backlash mainly In order to transmit angular rotation and control for the main purpose in low torque range, the same characteristic, metal spring coupling having zero backlash can be used. In addition, it can absorb torsional vibration which you cannot get from general couplings. To use for zero backlash, the operating torque is less than the rated torque on the table. (Refer to the table below) For zero backlash, the permissible torque is the same for 2 sleeves. However, for accurate transmission concerning necessary responsiveness, higher strength is required for sleeves. 2. To transmit extremely high torque mainly SJC type coupling can be used for higher torque compared with metal coupling because it transmits torque by compressing sleeve. Therefore, it can be applied to general industrial machines such as pump that does not need zero backlash seriously. SJC couplings sleeves are offered in two different types, green sleeve which has lower strength is used in lower rated and maximum torque condition, while a red sleeve has higher values. On the contrary, the green sleeve s misalignment permissible value is higher than the red sleeve s and thus, this type of sleeve is more suitable for absorbing vibration or impact. So, select the proper sleeve for your use. way Hardness (Shore D) Color Material SET SCREW TYPE CLAMP TYPE 55D (98A) Green Hytrel SJC GR SJC C GR 64D Red Hytrel SJC RD SJC C RD SJC14 SJC20 SJC25 SJC30 SJC40 SJC55 SJC65 SJC80 SJC100 Hardness For Zero Backlash Permissible Misalignment RD 64D RD 64D RD 64D RD 64D , RD 64D , , RD 64D , , RD 64D , , RD 64D , , RD 64D 600 1,200 40, Permissible Misalignmen t Permissible Endplay How to order product No Shaft Diameter(d1) Clamp spilt type (No mark :Standard Bore) Shaft Diameter(d2) SJC25C (W) RD 8 W K3 x 12 W K4 Key Size No mark: standard inner diameter Please mark each inner diameter size. When you order penetratetype sleeve, please mark penetratetype. The following is the size of the inner diameter of penetratetype sleeves. SJC14 =Ø4.5, SJC20=Ø7, SJC25=Ø7.6, SJC30=Ø9.6, SJC40=Ø15.5, SJC55=Ø25.3, SJC65=Ø26.7, SJC80=Ø30.8, SJC100=Ø50.5 Clamp split type is available for SJCB30C, SJC 40C, SJC55C, SJC65C, SJC80C and SJC100C. Please mark 'W' right behind the bore diameter where you want to separate. 38 SUNGIL MACHINERY

3 Please, download CAD DATA from SJC GR(RD) [SET SCREW TYPE] SJC GR(RD) [SET SCREW TYPE] Ø D: Ø14~ Ø30 Ø D: Ø40 Dimension (±0.3) Bolt D L L1 L 2 F EndPlay M (min 1 ) SJC14 GR M , SJC20 GR M , SJC25 GR M , SJCA30 GR M , SJCB30 GR M , SJCA40 GR M5 4 9, , SJCB40 GR M5 4 9, , SJC14 RD M , SJC20 RD M , SJC25 RD M , SJCA30 RD M , SJCB30 RD M , SJCA40 RD M5 4 9, , SJCB40 RD M5 4 9, , SJC14 SJC20 SJC25 SJC30 SJC40 SRB Series SOH Series SD Series SHD Series SRG Series SCJ Series SFC Series SHR Series SUNGIL MACHINERY 39

4 SJC CGR(RD) [CLAMP TYPE] SJC CGR(RD) [CLAMP TYPE] Ø D: Ø14~ Ø30 Ø D: Ø40 Dimension (±0.3) D L L1 L 2 F Bolt M (min 1 ) SJC14C GR M , SJC20C GR M , SJC25C GR M , SJCA30C GR M , SJCB30C GR M , SJCA40C GR M5 8 8, , SJCB40C GR M5 8 8, , SJC14C RD M , SJC20C RD M , SJC25C RD M , SJCA30C RD M , SJCB30C RD M , SJCA40C RD M5 8 8, , SJCB40C RD M5 8 8, , EndPlay SJC14C SJC20C SJC25C SJC30C SJC40C 40 SUNGIL MACHINERY

5 Please, download CAD DATA from SJC GR(RD) SJC CGR(RD) SJC 100CGR(RD) [SET SCREW TYPE] [CLAMP TYPE] [CLAMP TYPE] Ø D: Ø55~ Ø100 Dimension (±0.3) D L L1 L 2 F Bolt M (min 1 ) SJC55 GR M6 7 7, , SJC65 GR M8 15 6, , SJC80 GR M8 15 5, , , SJC100 GR M , , , SJC55C GR M6 13 6, , SJC65C GR M8 30 5, , SJC80C GR M , , , SJC100C GR M , , , SJC55 RD M6 7 7, , SJC65 RD M8 15 6, , SJC80 RD M8 15 5, , , SJC100 RD M ,000 1, , , SJC55C RD M6 13 6, , SJC65C RD M8 30 5, , SJC80C RD M , , , SJC100C RD M ,500 1, , , Ø D: Ø55~ Ø80 EndPlay SJC55 SJC65 SJC80 SJC100 SRB Series SOH Series SD Series SHD Series SRG Series SCJ Series SFC Series SHR Series SUNGIL MACHINERY 41

6 SJCM CGR(RD) [CLAMP M TYPE] SJCM 100CGR(RD) [CLAMP M TYPE] Ø D: Ø55~ Ø80 Dimension (±0.3) D L L1 L 2 F Bolt M (min 1 ) SJCM55C GR M6 13 4, , SJCM65C GR M8 30 3, , SJCM80C GR M , , SJCM100C GR M , , , SJCM55C RD M6 13 4, , SJCM65C RD M8 30 3, , SJCM80C RD M , , SJCM100C RD M ,000 1, , , EndPlay SJCM55C SJCM65C SJCM80C SJCM100C NEW It is possible to order the CLAMP Split Type for outer Diameter Size Ø30Ø100 (Ø 30 is available B TYPE) It is impossible for SJCM series. NEW CLAMP SPLIT TYPE GENERAL CLAMP TYPE 42 SUNGIL MACHINERY

7 SJC T Features Perfect balancing Various inner diameter sizes Optimized for high speed rotation High clamping force (No slip without key) Model No. Dimension (±0.3) Bolt D L L1 L 2 M (min 1 ) SJC55TGR M5 8 12, , x SJC65TGR M5 8 10, , x SJC80TGR M6 13 8, ,000 9 x SJC100TGR M , , x SJC55TRD M5 8 12, , x SJC65TRD M5 8 10, , x SJC80TRD M6 13 8, ,000 9 x , SJC100TRD M , , x , transition ability, torsional stiffness and hardness are dependent on sleeve type(gr/rd) Misalignment tolerance EndPlay SJC55T SJC65T SJC80T SJC100T h7 shaft tolerance is recommended. Structure & Material : Hytrel(RD/GR) Outer ring of hub: High strength aluminum alloy SJC T will be released Sep. 13 For lead time contact us. Tightering bolt: SCM435 Inner ring of hub: High strength aluminum alloy SRB Series SOH Series SD Series SHD Series SRG Series SCJ Series SFC Series SHR Series SUNGIL MACHINERY 43