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JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 1 IN JAE, HWANG
■ Reduction gear JUNJIN uses the reduction gear for swing on M42, M43, M50 and M55. Boom pump supplies hyd. oil to the turning motor through the boom control valve. The oil flow opens the brake valve of reduction gear and the boom starts to slew with the pinion gear and the ring gear.
■ Spec. of the reduction gear
M40 M42 M43 M48 M50 M52 M55
Part # MS023 MS113 RB371 RB371 RB37100C RB475 RB475 MS114 RB795 MS08 MS143
Pinion gear RB9305 MS11314 RB37114 RB37114 RB37114C RB47514 RB47514 MS11414 RB47514 MS080014 MS11414
Gear body Shaft(φ) RB37180C φ85 MS1138 φ RB3718 φ95 RB3718 φ95 RB37180C φ85 RB3718 φ95 RB3718 φ95 MS1148 RB3718 φ95 RB3718 φ95 MS1138
Ratio 81.9
Teeth(Z) Ring gear 19 RB829
81.9 81.9 81.9 159.1 159.1
15 15 15 14 14
RB376 RB376 RB376 RB474 RB474
81.9 81.9
14 17
RB474 RB474
■ Hyd. turning motor Model Part #
M40 RB566
M42 RB387
M43 RB387
M48 RB481
M50 RB481
M55 RB566
■ Brake valve of reduction gear All models
Torque
Brake valve
Gear body without brake valve
24KG⋅M
RB3719
RB37185
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 2 IN JAE, HWANG
■ Brake valve of reduction gear The swing brake is just a stack of small disk that bind against each other like a clutch. When the tension from a spring is released, the swing motor turns and sends oil to the hub which releases this tension and the disk will spin against each other. As soon as the swing motor is stopped, the spring should clamp down on the disk and they should grab again. It is the same principle as a multi plate clutch.
■ Brake valve operation ○ As the oil flows to the brake valve, yellow area gets bigger. (Brake released) ○ Green piston moves by the oil flow. ○ Blue-black brake disk is released.
Holding brake
Releasing brake
○ Blue-black = Disc
○ Yellow = Hyd. oil
○ Green = Brake piston
○
2 of air breathers for piston and disc move
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 3 IN JAE, HWANG
■ Checking the torque of brake valve ○ Using the torque wrench ⋅Lift the main section vertically for safety after O/R set up. ⋅Relief the air pressure in system and take apart the brake valve from the reduction gear. ⋅Plug the hyd. line which is connected to the brake valve from the safety valve block. ⋅Check the torque using the torque wrench. (An adapter which connect the coupling and torque wrench is necessary.) ⋅Recommended torque value = 24KG⋅M (±3KG⋅M)
○ Visual check of the brake valve ⋅Remove the cover of pinion gear. ⋅Check the movement of pinion gear and ring gear when the boom stops right after the swing. If the gear movement keeps to turn even though the operator stop slewing. ⋅It is normal the gear moves within the backlash.
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 4 IN JAE, HWANG
■ Pictures of reduction gear
M40
M42, M43
M48, M50
55M
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
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JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 1 IN JAE, HWANG
■ Reduction gear JUNJIN uses the reduction gear for swing on M42, M43, M50 and M55. Boom pump supplies hyd. oil to the turning motor through the boom control valve. The oil flow opens the brake valve of reduction gear and the boom starts to slew with the pinion gear and the ring gear.
■ Spec. of the reduction gear
M40 M42 M43 M48 M50 M52 M55
Part # MS023 MS113 RB371 RB371 RB37100C RB475 RB475 MS114 RB795 MS08 MS143
Pinion gear RB9305 MS11314 RB37114 RB37114 RB37114C RB47514 RB47514 MS11414 RB47514 MS080014 MS11414
Gear body Shaft(φ) RB37180C φ85 MS1138 φ RB3718 φ95 RB3718 φ95 RB37180C φ85 RB3718 φ95 RB3718 φ95 MS1148 RB3718 φ95 RB3718 φ95 MS1138
Ratio 81.9
Teeth(Z) Ring gear 19 RB829
81.9 81.9 81.9 159.1 159.1
15 15 15 14 14
RB376 RB376 RB376 RB474 RB474
81.9 81.9
14 17
RB474 RB474
■ Hyd. turning motor Model Part #
M40 RB566
M42 RB387
M43 RB387
M48 RB481
M50 RB481
M55 RB566
■ Brake valve of reduction gear All models
Torque
Brake valve
Gear body without brake valve
24KG⋅M
RB3719
RB37185
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 2 IN JAE, HWANG
■ Brake valve of reduction gear The swing brake is just a stack of small disk that bind against each other like a clutch. When the tension from a spring is released, the swing motor turns and sends oil to the hub which releases this tension and the disk will spin against each other. As soon as the swing motor is stopped, the spring should clamp down on the disk and they should grab again. It is the same principle as a multi plate clutch.
■ Brake valve operation ○ As the oil flows to the brake valve, yellow area gets bigger. (Brake released) ○ Green piston moves by the oil flow. ○ Blue-black brake disk is released.
Holding brake
Releasing brake
○ Blue-black = Disc
○ Yellow = Hyd. oil
○ Green = Brake piston
○
2 of air breathers for piston and disc move
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 3 IN JAE, HWANG
■ Checking the torque of brake valve ○ Using the torque wrench ⋅Lift the main section vertically for safety after O/R set up. ⋅Relief the air pressure in system and take apart the brake valve from the reduction gear. ⋅Plug the hyd. line which is connected to the brake valve from the safety valve block. ⋅Check the torque using the torque wrench. (An adapter which connect the coupling and torque wrench is necessary.) ⋅Recommended torque value = 24KG⋅M (±3KG⋅M)
○ Visual check of the brake valve ⋅Remove the cover of pinion gear. ⋅Check the movement of pinion gear and ring gear when the boom stops right after the swing. If the gear movement keeps to turn even though the operator stop slewing. ⋅It is normal the gear moves within the backlash.
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
JSI - EN - 05 - 2D - 001 Date Total Pages 4 P re s e n t P a g e Written by IL KYU, AN Approved by Subject Reduction gear for swing
Feb 1st, 2005 4 IN JAE, HWANG
■ Pictures of reduction gear
M40
M42, M43
M48, M50
55M
JUNJIN HEAVY INDUSTRY SERVICE DEPARTMENT 428-1 Doosung-ri Maengdong-Myun Eumsung-Gun Chungbuk, Korea Tel : (+82)43 877-3023 Fax : (+82)43 882-3023 E-MAIL : [email protected] ⓒ COPYRIGHT 2005 JUNJIN HEAVY INDUSTRY CO., LTD. ALL RIGHTS RESERVED
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