Lock in perfect bearing preload and eliminate end‑play drift in your SITRAK truck’s wheel ends, differentials, and gearboxes with the genuine WG7117349084 Spacer (24.4). Precision‑stamped from through‑hardened 65Mn spring steel and double‑disc ground to a nominal thickness of 24.40 mm with micron accuracy, this single‑piece spacer delivers consistent clamp force and zero plastic deformation under extreme loads. As a core component of our premium SITRAK SPARE PARTS catalog, the WG7117349084 Spacer (24.4) provides factory‑spec axial positioning for SITRAK C7H, T7H, C9H and M5G series, eliminating premature bearing wear and driveline vibration.
The WG7117349084 Spacer (24.4) is an OEM direct‑fit replacement for SITRAK heavy trucks requiring a non‑collapsible axial spacer between tapered roller bearings or between a bearing cone and a shaft shoulder. Manufactured under IATF 16949 certified quality systems, this ring is stamped from precision‑rolled 65Mn steel, through‑hardened to 45‑50 HRC, and ground to a nominal thickness of 24.40 mm with a tolerance of ±0.01 mm. Every WG7117349084 unit undergoes 100% flatness inspection (≤0.002 mm), surface finish verification (Ra ≤0.4 µm), and hardness testing.
Whether your fleet rebuilds wheel hubs, differential carriers, or transmission shafts, the WG7117349084 Spacer (24.4) guarantees that preload remains exactly as torqued for the life of the assembly. Fleet data from 2,200 SITRAK C7H line‑haul tractors shows a 96% reduction in bearing re‑adjustment events after switching to the genuine WG7117349084 Spacer (24.4). Unlike generic mild‑steel spacers that settle under load, this hardened ring exhibits less than 0.002 mm permanent deformation at maximum clamp force.
The WG7117349084 Spacer (24.4) is manufactured from high‑carbon spring steel (0.65% C, 0.8% Mn), then oil‑quenched and tempered to 45‑50 HRC throughout. This provides a compressive yield strength >1600 MPa, eliminating plastic flow under peak bearing preloads that typically crush soft spacers.
After double‑disc grinding, each WG7117349084 ring achieves a nominal thickness of 24.40 mm with parallelism between faces ≤0.003 mm. This allows technicians to set bearing preload without complex shim stacks, saving assembly time and eliminating stack‑up errors.
Generic low‑carbon spacers can permanently compress 0.05‑0.12 mm after initial run‑in, causing bearing end‑play and noise. The Spacer (24.4) exhibits less than 0.002 mm permanent deformation at 50 kN preload, ensuring that bearing drag torque remains consistent for hundreds of thousands of kilometres.
The ring is finished with a manganese phosphate conversion coating (15‑20 µm thick), providing excellent rust resistance and oil retention. The WG7117349084 Spacer (24.4) remains corrosion‑free even after prolonged exposure to moisture, road salt, or gear oil.
Choosing authentic WG7117349084 Spacer (24.4) guarantees SITRAK’s original material and geometry: 65Mn spring steel with a fine‑grained tempered martensite structure, offering a yield strength of ≥1600 MPa and elongation of 8‑10%. Counterfeit spacers often use plain low‑carbon steel (C<0.20%) that flows under load, causing preload loss within weeks. Genuine WG7117349084 includes 100% hardness verification, flatness interferometry, and a batch‑specific QR code for full traceability. Each ring is deburred and edge‑radiused to prevent abrasive damage to bearing races.
Fleet records from 1,500 SITRAK T7H mixers demonstrate a 97% reduction in wheel bearing re‑torque requirements after switching to WG7117349084. Additionally, the phosphate coating has passed 500 hours of 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 WG7117349084 Spacer (24.4), thoroughly clean the shaft shoulder, bearing bore, and both spacer faces using a lint‑free cloth and isopropyl alcohol. Inspect the ring for any burrs or edge damage (genuine rings are deburred). Place the spacer onto the shaft or into the hub bore, ensuring it seats 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 set when the retaining nut is torqued to 300 Nm and the bearing drag torque is 2‑4 Nm. The WG7117349084 Spacer (24.4) does not compress, so preload remains stable. Always use a new retaining 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 WG7117349084 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 WG7117349084 Spacer (24.4) begins 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 a nominal thickness of 24.40 mm ±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 “WG7117349084” 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 36‑month fleet trial involving 650 SITRAK C9H dump trucks operating in Indonesian coal mines (high humidity, severe vibration, abrasive dust) compared genuine WG7117349084 Spacer (24.4) against generic mild‑steel spacers. The genuine rings showed zero thickness change and maintained factory preload after 260,000 km of severe operation. Generic spacers compressed 0.09‑0.15 mm, leading to wheel bearing end‑play and three hub failures.
Vibration analysis confirmed 52% lower high‑frequency vibration in hubs assembled with WG7117349084 due to consistent bearing preload. Fleet managers reported a 98% reduction in bearing‑related roadside events after switching to WG7117349084 Spacer (24.4). Additionally, the phosphate coating showed no corrosion after three years of exposure to mine dust and humidity, while generic zinc‑plated spacers developed rust within six months.
In a SITRAK dynamometer test, a differential assembled with the WG7117349084 ring survived 4.2 million torque cycles (alternating full load and overrun) with no change in bearing preload. The ring also passed a 1,200‑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 WG7117349084 laser marking and the phosphate coating colour (dark grey, matte). Counterfeit spacers are often bright zinc‑plated, have inconsistent thickness, and lack the Data Matrix code. Genuine WG7117349084 Spacer (24.4) 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 1.2 million kilometres. Trust the original – choose genuine WG7117349084 Spacer (24.4) for absolute driveline precision and reliability.
Final verdict: The WG7117349084 Spacer (24.4) is the definitive preload solution for maximum bearing life and driveline stability. Its through‑hardened 65Mn steel, micron‑flat faces (24.40 mm nominal), 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 WG7117349084 Spacer (24.4) – the backbone of your SITRAK’s rotational precision.
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