194-8128 1948128 Heavy‑Duty NBR & Steel Piston Ring Seal for CAT D11 Balance Beam D11R, D11T
Price:
Negotiable
MOQ:
10
Delivery Time:
Within 5-15 days after getting your desposit
Brand:
OUB
Product Description
1. Quick Details of seal 194-8128:
| Part NO. | 194-8128 |
| Machine | Crawler Tractor |
| Size | OEM |
| Material | High‑strength Steel Reinforced |
| Oil seal type |
rubber and steel |
2. 194-8128 parts on group :
| NO. | PART NO. | PRAT NAME | QTY |
| 1 | 3B-8489 | FITTING-GREASE (1/8-27 PTF)(EQUALIZER BAR | 2 |
| 2 | 5P-7151 | RING-RETAINING | 4 |
| 3 | 8P-8796 | SEAL AS | 1 |
| 4 | 8P-8797 | SEAL AS | 1 |
| 5 | 129-4487 | BUSHING | 2 |
| 6 | 133-5631 | PLUG | 2 |
| 7 | 159-9311 | BEARING | 2 |
| 8 | 194-8128 | SEAL AS | 4 |
| 9 | 2F-5326 | SETSCREW (3/8-16XO.375-IN) | 8 |
| 10 | 3J-7354 | SEAL-O-RING | 2 |
| 11 | 5F-1678 | SEAL-O-RING | 2 |
| 12 | 7X-0323 | BOLT (1/2-13X0.5-IN) | 4 |
| 13 | 8T-4223 | WASHER-HARD (13.5X25.5X3-MM THK) | 4 |
| 14 | 95-8002 | PLUG (7/16-20-THD) | 2 |
3. 194-8128 picture:
4. Service part number :
| PART NO. | PART NO. | Part NO. |
| 8C5175 | 5K-9090 | 8M4390 |
| 1H7339 | 5P-2235 | 9X4611 |
| 8T9528 | 1T-0132 | 2256948 |
| 5K5129 | 9X-7735 | 1J2150 |
| 5D-7523 | 095-1751 | 1142687 |
| 2D-6533 | 095-1586 | 1173036 |
| 8M-4389 | 095-1608 | 6V6228 |
| 9H-3360 | 367-8471 | 5J2974 |
| 6F-8146 | 367-8472 | 1362967 |
| 3D-8422 | 095-1587 | 6V3251 |
| 6V-1196 | 095-1603 | 6J2419 |
| 161-9835 | 5P5874 | 3511768 |
5. FAQ
Q: Could you explain the material structure and why NBR with steel reinforcement is chosen?
A: It’s a composite structure: a rigid steel inner ring for structural support, overmolded with high‑grade NBR rubber. The steel core prevents deformation under heavy torque and pressure. The NBR outer layer provides elasticity, excellent oil resistance, and wear resistance. Together, they handle dynamic swing motion and harsh contaminants without cracking or leaking.
A: It’s a composite structure: a rigid steel inner ring for structural support, overmolded with high‑grade NBR rubber. The steel core prevents deformation under heavy torque and pressure. The NBR outer layer provides elasticity, excellent oil resistance, and wear resistance. Together, they handle dynamic swing motion and harsh contaminants without cracking or leaking.
Q: What color, finish, and physical features does this seal have?
A: The seal is solid black with a smooth, slightly matte NBR surface—no gloss, which improves grip in the groove. The inner steel ring is dark gray with a clean, machined edge. It has precise chamfers on both sides for easy, damage‑free installation. The overall texture is firm yet flexible, with uniform thickness.
Q: How is this swing piston ring seal different from standard engine piston rings?
A: Engine rings seal high‑temperature combustion gas at high speed. The 194-8128 is a low‑speed, heavy‑load swing seal for undercarriage articulation. It seals grease, not gas, and withstands lateral torsion, vibration, and extreme abrasion. Its cross‑section is thicker, and it uses rubber‑steel composite instead of cast iron or chrome plating.
Q: What common issues happen if you use a low‑quality replacement seal here?
A: Cheap seals use poor‑grade rubber that hardens quickly and thin steel that bends. They leak grease within hundreds of hours, causing the balance beam joint to seize. This leads to stiff steering, uneven track tension, accelerated undercarriage wear, and even cracked balance beams—costing thousands in downtime and repairs.
6. Exhibition and Wearhous
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Company
Guangzhou Opal Machinery Parts Operation Department
Location
NO.212,Zhu ji rode,tian he distric,guangzhou,China
Contact Person
Vivian