Hyundai R950 XCMG XE950 Excavator Drive Sprocket Segment Teeth Final Drive Gear

Hyundai R950 / XCMG XE950 Excavator Drive Sprocket Segment Teeth | Bolt-On Final Drive Sprocket Teeth for Large Mining Excavators

Eliminate track slippage, jumping teeth, abnormal final-drive noise, and accelerated chain wear on your Hyundai R950 or XCMG XE950 with our drive sprocket segment teeth, the direct OEM-replacement drive gear teeth engineered for large mining-class hydraulic excavators. These final drive sprocket teeth mesh precisely with the track chain links and bushings, transmitting full travel torque from the final drive motor to the ground while keeping the track centered and in phase. Made from alloy steel (40Cr / 35CrMo / SCM415) with carburizing & quenching or induction hardening to HRC 56–62, a controlled case depth, and a tough core, these segment teeth resist pitting, hook wear, and tooth breakage even under heavy loads on abrasive rock and ore. The bolt-on segmented design lets you replace only the worn teeth instead of the whole sprocket rim — cutting parts cost and downtime dramatically. Supplied with matched mounting bolts and torque specs, verified by machine serial number / original part number, and backed by strict ISO 9001 quality control and global technical support — the smart choice for mines and fleets that need dealer-level life without dealer-level prices. Ask about our bulk pricing, full undercarriage sets (sprockets, idlers, rollers, track shoes, links), and express worldwide shipping.

🔧 Key Specifications

⚠️ Note: Tooth count, pitch, bolt hole spacing, and profile vary by machine serial number and production batch. Please confirm your machine's serial number, original part number, and photos of the old sprocket before ordering.

🔍 Technology & Principle

The sprocket teeth are the final link in the power train — where engine power becomes ground traction:

1. Torque transmission: The final drive motor outputs torque through the planetary reduction to the sprocket hub; each tooth carries a share of the total tractive force.
2. Tooth-chain meshing: Sprocket teeth engage the track chain bushings/link gaps; correct pitch ensures simultaneous multi-tooth contact and even load distribution.
3. Wear mechanism: As bushings wear and pitch elongates, the chain climbs the tooth flank ("hook wear"), accelerating both sprocket and chain wear — hence replace as a matched set.
4. Surface-hardened layer: A hard carburized/nitrided case resists abrasive and adhesive wear while the ductile core prevents brittle fracture under impact.
5. Segmented structure: Splitting the ring into bolted segments allows field replacement without removing the final drive motor or pressing off the whole rim.
6. Failure cascade: Worn or broken teeth cause track slip, jumping teeth, vibration, final-drive overload, higher fuel consumption, and eventually chain breakage or derailment.

🏗️ Applications

• Mining & quarry haul roads: Driving tracks under full load on abrasive overburden, ore, and blasted rock.
• Mass excavation & earthmoving: Continuous travel cycles in clay, sand, and mixed strata.
• Steep slope & side-hill work: High tractive demand where tooth engagement must not slip.
• Demolition & scrap yards: Impact loads and metal debris around the final drive area.
• Wetland & muddy sites: Muddy chains accelerate abrasive wear on tooth flanks.
• Cold-region operations: Teeth and bolts selected for low-temperature impact toughness.
• Fleet undercarriage rebuilds: Preventive replacement during scheduled sprocket/chain overhaul on R950/XE950 fleets.

⚙️ Manufacturing Process

1. Material selection: Alloy steel bar/forging blank (40Cr / 35CrMo / SCM415); spectrometry verified for C, Cr, Mo content.
2. Forging: Hot die forging forms the tooth blank with favorable grain flow; normalizing refines grain structure.
3. CNC machining: Tooth profile, bore, and bolt holes machined to print; pitch circle runout controlled tightly.
4. Heat treatment: Carburizing/quenching or induction hardening to HRC 56–62 with controlled case depth; tempering to relieve stress.
5. Hardness & case-depth check: Hardness mapping plus case-depth measurement; records archived per batch.
6. Tooth profile inspection: Profile projector/CMM check of tooth form and pitch to ensure correct chain meshing.
7. Surface treatment: Shot blasting to remove scale; anti-corrosion coating or phosphating applied.
8. 100% inspection: Dimensional check, visual/crack inspection (magnetic particle), bolt hole thread gauge check, then kitted with matched bolts and packed.

🤝 Company Services

• Global shipping: Air freight (3–5 days) or sea freight (15–25 days); teeth packed in rust-proof bags inside export cartons/crates.
• 12-month warranty: Covers manufacturing defects including tooth breakage, spalling, and bolt-hole failure under normal use.
• Technical support: 24/7 remote assistance for tooth-count verification, installation torque specs, and wear diagnosis.
• Part-number cross-reference: Free lookup by OEM number, serial number, or photos of the old sprocket and nameplate.
• Bulk & fleet pricing: Special rates for dealers, mines, rental fleets, and large orders.
• Full undercarriage supply: Sprockets, segment teeth, idlers, track rollers, carrier rollers, track shoes, links, pins & bushings, recoil springs, adjusters.
• Wear audit service: Photo-based sprocket and chain wear assessment with replacement-sequence recommendations.

❓ FAQ

Q: Will these segment teeth fit my Hyundai R950 / XCMG XE950?
A: They are made for R950 and XE950 same-platform machines. Send your serial number, original part number, and a photo of the existing sprocket so we can confirm tooth count, pitch, and bolt hole pattern.

Q: How do I know if the drive teeth need replacing?
A: Signs include hooked or pointed tooth profiles, visible grooves or steps on the flanks, cracked or chipped teeth, loose or sheared bolts, track slipping/jumping teeth during travel, and abnormal grinding noise from the final drive area.

Q: Should I replace the track chain at the same time?
A: Highly recommended. A worn chain with elongated pitch will rapidly destroy new teeth, and new teeth accelerate wear on an old chain. Replace as a matched set for best cost per hour.

Q: Can I replace just one segment?
A: You can, but it's best to replace all segments on one sprocket at once to keep hardness and profile consistent and avoid uneven load sharing.

Q: What torque should the mounting bolts be tightened to?
A: Use the torque value specified in your machine's service manual for the given bolt grade, and apply thread locker where specified. Re-check torque after the first 10–20 operating hours.

Q: Do I need to remove the final drive motor to change the teeth?
A: On most segmented designs, no — the segments can be changed with the machine jacked up and the track removed. However, access varies by model; we can advise based on your serial number.

Q: Is this a genuine Hyundai/XCMG part?
A: This is an aftermarket/OEM-grade replacement manufactured to match original specifications. It is not a genuine branded part unless explicitly stated. Part numbers are for identification only.

Q: What is the lead time?
A: In-stock items ship in 3–5 business days. Specific configurations and bulk orders require 10–15 business days.