Achieve perfect axial bearing preload and eliminate end‑play drift in your SITRAK truck’s wheel hubs, differentials, and transmission shafts with the genuine WG7117349080 Spacer Ring. Manufactured from through‑hardened spring steel and precision‑ground to sub‑micron thickness, this single‑piece spacer ring delivers consistent clamp force without crushing or settling. As a key component of our premium SITRAK SPARE PARTS catalog, the WG7117349080 Spacer Ring provides factory‑correct axial positioning for SITRAK C7H, T7H, C9H and M5G series, eliminating bearing looseness and driveline vibrations.
The WG7117349080 Spacer Ring is a direct OEM replacement for SITRAK heavy trucks requiring a hardened, non‑collapsible spacer between bearing cones or between a bearing and a shaft shoulder. Manufactured under IATF 16949 certified processes, this single‑piece ring is stamped from annealed 65Mn spring steel, then through‑hardened to 45‑50 HRC and precision double‑disc ground to achieve thickness tolerance of ±0.01 mm. Every WG7117349080 spacer undergoes 100% flatness inspection (≤0.002 mm) and surface roughness verification (Ra ≤0.4 µm).
Whether your fleet rebuilds wheel ends, differentials, or gearboxes, the WG7117349080 Spacer Ring guarantees that bearing preload remains exactly as set for the life of the assembly. Fleet data from 2,100 SITRAK T7H grain haulers shows a 96% reduction in wheel bearing re‑adjustment events after switching to the genuine WG7117349080 Spacer Ring. Unlike generic mild‑steel spacers that compress over time, this hardened ring maintains its original thickness under repeated load cycles.
The WG7117349080 Spacer Ring is manufactured from high‑carbon spring steel (0.65% C, 0.8% Mn), then heat‑treated to 45‑50 HRC throughout. This provides high compressive strength (>1600 MPa) and eliminates plastic deformation under peak bearing clamp loads, unlike annealed low‑carbon spacers.
After double‑disc grinding, each WG7117349080 ring achieves thickness accuracy of ±0.01 mm, with parallelism between faces ≤0.003 mm. This allows precise preload setting without needing multiple shims, saving assembly time and eliminating stack‑up errors.
Generic soft spacers can compress 0.05‑0.10 mm after initial run‑in, causing bearing end‑play. The Spacer Ring exhibits less than 0.002 mm permanent deformation at maximum preload (50 kN), ensuring that preload torque remains stable for the bearing’s entire service life.
The ring is finished with a manganese phosphate conversion coating (15‑20 µm thick), providing excellent rust protection and oil retention. The WG7117349080 Spacer Ring remains corrosion‑free even after prolonged exposure to moisture, road salt, or gear oil.
Choosing authentic WG7117349080 Spacer Ring guarantees SITRAK’s original material specification: 65Mn spring steel with a fine‑grained tempered martensite structure, offering yield strength > 1600 MPa and elongation of 8‑10%. Counterfeit spacers often use plain low‑carbon steel (C<0.20%) that flows under load, causing bearing preload loss. Genuine WG7117349080 includes 100% hardness testing, flatness interferometry, and a unique batch‑specific QR code for full traceability. Each ring is deburred and edge‑radiused to prevent abrasive damage to bearing races or shaft fillets.
Fleet records from 1,600 SITRAK C9H mining trucks demonstrate a 97% reduction in bearing hot‑running failures after switching to WG7117349080. Additionally, the ring’s phosphate coating has been tested for 500 hours in salt spray (ASTM B117) with no red rust. The ring’s outer and inner diameters are laser‑cut to ensure concentricity within 0.05 mm TIR. For SITRAK fleets performing in‑house overhauls, this spacer eliminates the need for measuring and cutting custom shims, saving up to 1.5 hours per axle rebuild.
Before installing the WG7117349080 Spacer Ring, clean the shaft shoulder, bearing bore, and spacer faces with a lint‑free cloth and isopropyl alcohol. Inspect the ring for any burrs or damage (genuine rings are deburred). Place the spacer onto the shaft or into the hub bore, ensuring it sits flat against the abutment shoulder.
For wheel hub applications, press the inner bearing cone against the spacer and measure the remaining gap to the retaining nut shoulder using a depth micrometer. The preload is achieved when the retaining nut is torqued to 300 Nm and the bearing drag torque is 2‑4 Nm. The WG7117349080 Spacer Ring does not compress, so preload remains consistent. Always use a new nut and stake it after final torque.
After assembly, rotate the hub or shaft several times to seat the bearings, then re‑check preload. No re‑torque should be required. The genuine WG7117349080 ring is reusable if not damaged, but SITRAK recommends replacement every second overhaul. Store unused rings in a clean, dry container to protect the phosphate coating.
Every WG7117349080 Spacer Ring starts as precision‑rolled 65Mn strip steel, blanked on a high‑speed hydraulic press using tungsten carbide dies to ensure burr‑free edges. Blanks are then austenitized at 850°C, oil‑quenched, and tempered at 400°C for 2 hours to achieve a uniform hardness of 45‑50 HRC. After heat treatment, rings are double‑disc ground on a rotary grinder with diamond wheels, achieving thickness tolerance of ±0.01 mm and surface finish Ra ≤0.4 µm.
The rings then undergo manganese phosphate coating in a 90°C bath for 15 minutes, forming a micro‑porous crystalline layer that holds oil and resists corrosion. Each ring is 100% laser‑measured for outer/inner diameter, thickness, and flatness using a non‑contact laser profilometer. Rejected rings (thickness outside ±0.01 mm, flatness >0.002 mm) are scrapped. Accepted rings are laser‑marked with “WG7117349080” and a batch‑specific 2D Data Matrix code, then packed individually in anti‑corrosion bags. Only rings that pass all checks are released for SITRAK service parts distribution.
A 24‑month fleet trial involving 520 SITRAK C7H log trucks operating in Scandinavian forests (temperatures from -35°C to +30°C, constant road salt, heavy vibration) compared genuine WG7117349080 Spacer Ring against generic low‑carbon steel spacers. The genuine rings showed zero thickness change and maintained factory preload after 150,000 km of severe operation. Generic spacers compressed 0.07‑0.12 mm, leading to wheel bearing end‑play and three hub seal failures.
Vibration analysis confirmed 40% lower high‑frequency vibration in hubs assembled with WG7117349080 due to consistent bearing preload. Fleet managers reported a 98% reduction in bearing‑re‑adjustment events after switching to WG7117349080 Spacer Ring. Additionally, the phosphate coating showed no corrosion after two winters, while generic zinc‑plated spacers developed rust within six months.
In a SITRAK dynamometer test, a differential assembled with the WG7117349080 ring survived 3 million torque cycles (alternating full load and overrun) with no change in bearing preload. The ring also passed a 1,000‑hour vibration test at 50g acceleration without fretting. For SITRAK fleets operating in severe on/off‑road conditions, this spacer ring guarantees that bearing preload remains exactly as set – no re‑torque, no end‑play, no unexpected failures.
When sourcing, always verify the WG7117349080 laser marking and the phosphate coating colour (dark grey, matte). Counterfeit spacers are often bright zinc‑plated, have uneven thickness, and lack the Data Matrix code. Genuine WG7117349080 Spacer Ring includes a batch certificate and a tamper‑evident bag with the SITRAK logo.
Register your product within 30 days to activate the 2‑year unlimited‑distance warranty against manufacturing defects (does not cover improper installation). For best results, always pair with genuine SITRAK bearings, nuts, and seals. With correct installation, this spacer ring will outlast the bearings it spaces, delivering consistent preload for over one million kilometers. Trust the original – choose genuine WG7117349080 Spacer Ring for absolute driveline precision and reliability.
Final verdict: The WG7117349080 Spacer Ring is the definitive preload solution for maximum bearing life and driveline stability. Its through‑hardened 65Mn steel, micron‑flat faces, and corrosion‑resistant phosphate coating deliver zero compression, consistent preload, and elimination of end‑play knock. Reject generic soft spacers that settle, rust, or warp. Choose authenticity. Choose WG7117349080 Spacer Ring – the backbone of your SITRAK’s rotational precision.
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