Your street sweepers break down after every rainstorm. Pressure washing the chassis floods the differential with soapy water. Dust from construction sites grinds the gears into paste within six months. Standard IP54 differentials were never meant for real-world sanitation work. We are Xuzhou Kehuan Electromechanical Equipment, and we built the DB-03 IP67 waterproof
Electric Tricycle Differential Box for operators who clean streets, collect waste, and run equipment in conditions that destroy ordinary drivetrains. Our triple-lip seal system and cast aluminum housing rated to full submersion keep water and dust out, so your fleet runs through monsoons, snowmelt, and pressure-wash cycles without a single internal drop.
Core Technical Specifications
- Protection Level: IP67 (full dust-tight, submersible to 1 meter for 30 minutes)
- Seal System: Triple-lip nitrile rubber seals with stainless steel garter springs
- Rated Voltage: 48V / 60V / 72V (custom 24V-72V available)
- Rated Power: 800W - 2,000W
- Peak Torque: 35 N.m to 60 N.m
- Gear Material: 20CrMnTi alloy steel with anti-corrosion phosphate coating
- Housing: Marine-grade die-cast aluminum with electrophoretic paint finish
- Breather Valve: Pressure-equalizing membrane prevents seal blowout during temperature swings
- Service Life: 60,000+ km in wet/dusty environments
- Working Temperature: -25C to +45C
- Warranty: 12 months against manufacturing defects
Why Choose Us
Factory Strengths
- ISO9001:2015 certified since 2016 with full MES + ERP digital management
- National High-Tech Enterprise recognized by the Chinese government
- 13 years focused exclusively on electric vehicle drivetrain components
- Over 1,000 direct customers across 30+ countries
- IP67 validation tested in-house with pressurized spray and submersion tanks
- Salt-spray testing cabinet (ASTM B117) for coastal and winter-road applications
- Every DB-03 unit passes a 0.05MPa pressurized leak test for 5 minutes before shipping
Customization Services
- Protection upgrade: IP68 available for underwater or deep-wading applications
- Voltage range: 24V to 72V tailored to your sweeper or waste collection motor
- Gear ratios optimized for low-speed high-torque sweeping (5-15 km/h) or moderate-speed transport (20-30 km/h)
- Housing color: Safety yellow, municipal green, or custom RAL code for fleet identification
- Connector types: Waterproof Deutsch, Amphenol, or your specified sealed connector
- Breather valve or fully sealed option depending on operating climate
- 3D modeling support and prototype validation within 2 weeks
- MOQ: 100 units per model for OEM orders
Real Customer Case Study: Indonesian Municipal Sanitation Fleet
Customer: City environmental services department operating 75 electric street sweepers in Surabaya, Indonesia
Before Kehuan:
- Differential failures during rainy season: 18-22 units per month (October-March)
- Primary failure mode: Water ingress through seals, followed by bearing corrosion
- Average differential lifespan in wet season: 4,200 km
- Downtime per failure: 5-7 days (waiting for imports from China)
- Annual repair and replacement cost: $47,000 USD
- Operator complaints: Sweeper downtime left streets flooded with debris during monsoon
After Switching to DB-03 (75 units deployed):
- Differential failures during rainy season: Zero over 24 months
- Differential lifespan: 38,000 km and counting (ongoing)
- Downtime: Scheduled annual maintenance only
- Annual repair and replacement cost: $0 for differential-related issues
- Pressure washing frequency: Daily (previously limited to weekly to avoid water damage)
- Fleet availability during monsoon: 98.5% (vs. 71% previously)
- Municipal manager quote: "We used to budget for 20 differential replacements every wet season. Now we budget zero. The DB-03 pays for itself in one rainy season."
Key data point: The dustproof sanitation vehicle differential gearbox supplier rating we earned from this customer led to three additional municipal contracts in Java.
Frequently Asked Questions
Q: How does IP67 compare to the IP54 rating on standard differentials?
A: IP54 protects against dust ingress and water splashing from any direction. IP67 means the unit is completely dust-tight and can survive submersion in 1 meter of water for 30 minutes. For the electric sweeper truck differential box sealed design we use on the DB-03, we test every unit with pressurized water spray at 0.05MPa and a 5-minute submersion test before shipping.
Q: Will the seals degrade if I pressure-wash the vehicle daily?
A: No. The DB-03 uses triple-lip nitrile seals rated for continuous exposure to hot water and mild detergents. We specifically developed this seal stack for municipal fleets that pressure-wash equipment daily. If your cleaning chemicals are particularly aggressive, tell us the formulation and we can upgrade to Viton fluoroelastomer seals.
Q: Can you match the mounting dimensions of my existing sweeper differential?
A: In most cases, yes. Send us a dimensional drawing or physical sample of your current differential and our engineering team produces a direct-replacement DB-03 with identical bolt patterns, shaft lengths, and connector positions. For OEM orders over 200 units, we reverse-engineer and validate fitment free of charge.
Water and dust should not decide whether your sanitation fleet works today. The DB-03 is built for operators who clean streets no matter the forecast.
Request IP67 Sample - Response Within 24 Hours
