Guangzhou Opal Machinery Parts Operation Department vivianwenwen8@gmail.com 86-135-33728134
Product Details
Place of Origin: China
Brand Name: OUB
Certification: ISO9001
Model Number: 31Y1-28790
Payment & Shipping Terms
Minimum Order Quantity: 10
Price: Negotiable
Packaging Details: PP Bag Inside.outer is carton with film wrapped.
Delivery Time: Within 5-15 days after getting your desposit
Payment Terms: L/C,D/A,D/P,T/T,Western Union
Supply Ability: 1000Pcs
Part No.:: |
31Y1-28790 |
Part Name:: |
SERVICE KIT |
Machine: |
Excavator |
Material: |
NBR |
Color: |
BLACK,WHITE,BROWN,BLUE |
Model: |
R220LC9A, R220NLC9A |
Part No.:: |
31Y1-28790 |
Part Name:: |
SERVICE KIT |
Machine: |
Excavator |
Material: |
NBR |
Color: |
BLACK,WHITE,BROWN,BLUE |
Model: |
R220LC9A, R220NLC9A |
1. Quick Details of seal 31Y1-28790:
| Part NO. | 31Y1-28790 |
| Machine | Excavator |
| Size | OEM |
| Material | NBR |
| Oil seal type | SEAL KIT |
2. 31Y1-28790 parts on group :
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| NO. | PART NO. | PRAT NAME | QTY |
| 1 | 31Q6-50400 | ARM CYLINDER ASSEMBLY | 1 |
| 2 | 31Y1-38020 | ARM CYL SUB ASSEMBLY | 1 |
| 3 | 31Y1-37940 | TUBE ASSEMBLY | 1 |
| 4 | 31Y1-37970 | ROD ASSEMBLY | 1 |
| 5 | 31Y1-28741 | GLAND | 1 |
| 6 | S732-100040 | BUSHING-DD2 | 1 |
| 7 | Y191-107000 | RING-SNAP | 1 |
| 8 | Y220-100013 | SEAL-ROD | 1 |
| 9 | Y180-100020 | RING-BACK UP | 1 |
| 10 | Y240-100012 | RING-BUFFER | 1 |
| 11 | Y110-100011 | WIPER-DUST | 2 |
| 12 | Y190-114000 | RING-SNAP | 1 |
| 13 | S631-130004 | O-RING | 1 |
| 14 | 31YC-CP130 | RING-BACK UP | 1 |
| 15 | 31YC-28030 | RING-CUSHION | 1 |
| 16 | 31Y1-28771 | PISTON | 1 |
| 17 | Y420-140002 | SEAL-PISTON | 1 |
| 18 | Y310-140103 | RING-WEAR | 2 |
| 19 | Y440-140202 | RING-DUST | 2 |
| 20 | S632-075004 | O-RING | 1 |
| 21 | S642-075003 | RING-BACK UP | 2 |
| 22 | 31YC-68050 | NUT-LOCK | 1 |
| 23 | S114-100164 | SCREW-SET | 1 |
| 24 | S632-140004 | O-RING | 1 |
| 25 | S109-180854 | BOLT-SOCKET | 14 |
| 26 | 61Q6-97230 | BUSHING-PIN | 2 |
| 27 | 61QH-73030 | BUSHING-PIN | 2 |
| 28 | Y020-080000 | SEAL-DUST,DLI,KPU | 4 |
| 29 | 31YC-2A070 | VALVE-CHECK | 1 |
| 30 | 31YC-99071 | SPRING-COIL | 1 |
| 31 | S631-014004 | O-RING | 1 |
| 32 | P220-110103 | PLUG-HEX | 1 |
| 33 | 31Y1-29170 | BAND ASSEMBLY-R | 1 |
| 34 | 31Y1-29180 | BAND SUB ASSEMBLY | 1 |
| 35 | 31Y1-29190 | BAND SUB ASSEMBLY | 1 |
| 36 | S015-120452 | BOLT-HEX | 2 |
| 37 | S411-120002 | WASHER-SPRING | 2 |
| 38 | S071-023430 | U-BOLT | 1 |
| 39 | S201-101002 | NUT-HEX | 2 |
| 40 | S411-100002 | WASHER-SPRING | 2 |
| 41 | 31Y1-37990 | BAND ASSEMBLY-B | 1 |
| 42 | 31Y1-29210 | BAND SUB ASSEMBLY | 1 |
| 43 | 31Y1-29190 | BAND SUB ASSEMBLY | 1 |
| 44 | S015-120452 | BOLT-HEX | 4 |
| 45 | S411-120002 | WASHER-SPRING | 4 |
| 46 | S071-023430 | U-BOLT | 2 |
| 47 | S201-101002 | NUT-HEX | 4 |
| 48 | S411-100002 | WASHER-SPRING | 4 |
| 49 | 31Y1-38010 | PIPE ASSEMBLY-R | 1 |
| 50 | Y171-024004 | O-RING | 1 |
| 51 | S107-120554 | BOLT-SOCKET | 4 |
| 52 | 31Y1-28790 | SEAL KIT | 1 |
3. 31Y1-28790 picture:
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4. Service part number :
| PART NO. | PART NO. | Part NO. |
| 31Y1-26940 | 31Y1-28520 | 31Y1-29100 |
| 31Y1-27130 | 31Y1-28640 | 31Y1-29270 |
| 31Y1-27470 | 31Y1‑30220 | 31Y1-29410 |
| 31Y1-27820 | 31Y1-28910 | 31Y1-29560 |
| 31Y1-28110 | 31Y1-28960 | 31Y1-29720 |
| 31Y1-28360 | 31Y1-29040 | 31Y1-29880 |
5. FAQ
Q: What kind of hydraulic pressure can these sealing components withstand steadily?
A: It can adapt to frequent pressure changes under normal construction working conditions.
Q: What kind of working environment can this seal set adapt to?
A: It fits most medium‑pressure hydraulic systems, works well within normal construction machinery temperature range.
Q: Could you describe the typical color appearance for each sealing component inside this set?
A: Main piston seals are navy‑blue, buffer seals are dark brown, anti‑extrusion rings are ivory‑white and standard O‑rings are black.
Q: What kind of hydraulic working environment can this whole repair kit cope with?
A: It fits medium‑high pressure hydraulic circuits and adapts to temperature fluctuation from normal construction site operations.
Q: Does this seal repair package include dust wiper for preventing dirt entering cylinder interior?
A: Yes, dust wiper, piston seals, rod seals, wear bands, backup rings and matched O‑rings are fully supplied in one kit.
Q: Can this product prevent hydraulic oil leakage effectively?
A: The precise size design effectively reduces internal leakage and external oil seepage.
Q: What construction scenarios often require this arm cylinder seal kit for regular maintenance?
A: It is widely used for maintaining mini excavators working on villa foundation projects, landscape engineering, pipeline trenching and rural road reconstruction.
6. Exhibition and Wearhous
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