Engineered for durability, the Roller is a premium-grade replacement roller designed specifically for Howo/Sitrak truck parts systems. This roller delivers silent, friction‑free operation in heavy‑duty suspension and belt tensioning applications, reducing maintenance intervals by up to 40%. Whether you maintain a fleet of HOWO dumpers or Sitrak long‑haul tractors, this roller ensures consistent performance under extreme loads. With precision bearings and hardened steel, the 199000340027 roller extends component life and minimizes downtime—a true game‑changer for workshop efficiency.
The Roller integrates advanced tribology and finite element analysis. Every unit is balanced to < 0.2g·mm, ensuring vibration‑free rotation even at 3,500 RPM. The dual‑row angular contact ball bearing supports radial and axial loads simultaneously, making it ideal for both belt tensioner pulleys and suspension idler wheels. Compared to generic rollers, the roller exhibits 28% lower noise emission and 19% higher shock absorption, according to internal dynamometer tests. This roller is the preferred choice for workshops that demand OEM‑grade reliability without the dealership markup.
| Parameter | Specification | Value / Note |
|---|---|---|
| OEM Number | 199000340027 | Genuine HOWO roller |
| Roller Type | Idler / Tensioner | Sealed ball bearing |
| Outer Diameter | 89.0 mm | ±0.05 mm |
| Inner Diameter | 35.0 mm | H7 tolerance |
| Width | 28.0 mm | ±0.1 mm |
| Bearing Type | Double row angular contact | 6303‑2RS equivalent |
| Static Load | 18.5 kN | radial / axial |
| Dynamic Load | 12.2 kN | at 1.500 rpm |
| Grease | High‑temp lithium | -30°C ~ 140°C |
| Surface | Zinc‑nickel + black oxide | corrosion resistant |
The Roller fits seamlessly into HOWO and Sitrak models including: HOWO T7H, HOWO A7, HOWO 6×4, Sitrak C7H, Sitrak C5H, and Sinotruk HD series. Its symmetrical design allows left‑ or right‑side mounting without modification. Installation torque: 85 N·m for the central bolt; use thread locker medium strength. Replacement interval recommended every 120,000 km under normal highway conditions. For severe off‑road duty, inspect the roller every 40,000 km. Always pair with a new locking nut to maintain preload accuracy.
Fleet operators report 22% longer belt life when using the Roller due to its optimized groove profile. The roller reduces parasitic drag, contributing to fuel savings of up to 1.2% in combined cycle testing. In a 6‑month field trial across 50 trucks, the roller exhibited zero premature failures, while standard rollers showed 11% failure rate. Maintenance labor per roller replacement averages 35 minutes—40% faster than competitors thanks to the pre‑greased bearing and captive washer design.
Each roller undergoes 100% end‑of‑line testing: dynamic balance, runout, seal integrity, and torque check. The production facility is IATF 16949 certified, ensuring consistent quality. Rollers are laser‑marked with the 199000340027 number and production date for full traceability. We provide a 12‑month or 100,000 km warranty against manufacturing defects. Independent lab reports confirm the roller exceeds SAE J1455 standard for heavy‑duty components.
Every 199000340027 Roller kit includes: the roller assembly with pre‑installed bearings, a high‑strength flange bolt (grade 10.9), a self‑locking hex nut, and a quick‑start guide with torque specs. The roller is pre‑greased with Klüber Isoflex NB 52, so no additional lubrication is needed before installation. The packaging is designed for easy storage and part identification, with the 199000340027 number clearly printed on all labels.
When you choose the Roller, you invest in peace‑of‑mind. It eliminates the guesswork of aftermarket compatibility and delivers factory‑spec performance. The roller’s material composition and heat treatment mirror the original HOWO design, ensuring that the suspension and belt systems operate as intended. With thousands of rollers already in service worldwide, this component has proven its mettle in mining, construction, and long‑haul logistics. Upgrade your maintenance stock with the roller that professionals trust—the Roller.
Reference OEM 199000340027 for all HOWO and Sitrak roller requirements. #HowoRoller
We are a heavy-duty truck parts store. Please leave your contact information and inquiries. We will respond within 12 hours.
