Anhui Huihuang Chain Transmission Co., Ltd. is one of the leading manufacturers and suppliers of kh875 38.1mm hy-vo inverted tooth roller chains in China, featured by quality products and good service. If you're going to wholesale advanced kh875 38.1mm hy-vo inverted tooth roller chains made in China, welcome to get pricelist and free sample from our factory. We also accept customized orders.
Structure Analysis
Stacked Toothed Link Plates Multi-layer link plates assembled side by side. Inner involute teeth contact sprockets with large contact area to reduce impact load. Multiple strands available for higher power.
Hy-Vo Pin & Bushing Articulation The core feature: sliding friction between pins and bushings. Lubricant can be retained inside hinges, greatly extending service life compared with bushingless silent chain.
Circular Lock Plates End lock plates prevent axial movement of pins, avoiding chain separation under vibration and alternating loads.
Guide Plates Optional Inner or outer guide plates can be equipped to avoid lateral deviation during high-speed running.
Key Advantages
Low noise & smooth operation Gradual tooth engagement minimizes vibration, well-known as silent chain.
Excellent fatigue resistance under alternating heavy loads Multi-plate load sharing and robust hinge design suit continuous high-power transmission.
Low elongation & long service interval Pin-bushing friction pair maintains stable lubrication film, slower wear rate.
Allows higher linear speed than heavy-duty roller chains.
Compact layout, suitable for medium & long center distance drive.
Description
The Hy-Vo type articulated inverted teeth quiet chain KH875 has a pitch of 38.1 mm. In contrast to traditional silent chains, it uses a pin and bushing hinge architecture that combines the excellent wear resistance of the roller chain hinge with the smooth meshing of the tooth chain. produced using complete heat treatment and high-strength alloy steel. For reliable power transfer, inner tooth profiles interact with sprockets. extensively utilized in high-power, medium-high speed drive systems, including blowers, air compressors, cement, petroleum, and engineering gear.
Lubrication & Maintenance Guide
1. Recommended Lubrication Methods by Linear Speed
Oil Bath / Drip Lubrication (< 10 m/s): Suitable for moderate speeds in enclosed gearboxes.
Forced Pressure Oil Spray (10 – 35+ m/s): Mandatory for high-speed Hy-Vo drives. Direct continuous oil spray to the inner loop of the chain at the sprocket meshing point to ensure penetration into pin joints and heat dissipation.
2. Recommended Lubricant Grades
Ambient Temp 0°C to 40°C: High-quality industrial petroleum lubricant ISO VG 68 to ISO VG 100 with anti-wear (EP) additives.
High Speed & Heavy Load: Fully synthetic gear oils (ISO VG 150/220) to prevent thermal degradation.
3. Maintenance Checklist
Tension Inspection: Maintain ideal initial sag at 1% to 2% of center distance.
Alignment Verification: Shaft parallelism within ±0.5 mm per meter to protect side plates.
Elongation Limit: Replace chain when wear elongation reaches 1.5% to 2% of original pitch.
High Speed & Low Noise Highlight)
Strong, Fast, Inverted Tooth Silent Chain Systems
For severe high-speed, heavy-load driving applications where normal roller chains fail, the KH875 38.1mm (1.5") pitch Hy-Vo inverted teeth quiet chain was specifically designed. This high-performance HV chain dramatically lowers chordal action, friction, and operational noise by using cutting-edge joint pin technology and optimized tooth profiles.
| Performance Feature | KH875 Hy-Vo Silent Chain | Standard Roller Chain (1.5" Pitch) | B-End Customer Benefit |
| Linear Speed Capacity | Up to 30–45 m/s (6,000+ ft/min) | Typically < 15 m/s | Enables high-rpm throughput without drivetrain failure |
| Transmission Efficiency | Up to 99% efficiency retention | 92% – 95% (degrades under vibration) | Lowers energy consumption and system heat generation |
| Noise Output (dB) | Ultra-low noise (Smooth meshing) | High impact noise at high speeds | Meets strict factory noise standards, improves ergonomics |
| Polygon Action / Vibration | Near-zero chordal effect | Noticeable polygon impact | Extends bearing and shaft lifespan, reduces downtime |
| Fatigue Resistance | High-tensile alloy steel links | Standard fatigue resistance | Lower total cost of ownership (TCO) in heavy machinery |
Notice of Custom OEM and Replacement:
We provide drop-in Hy-Vo quiet chain replacements that work with well-known global brands. On request, custom teeth counts, materials (42CrMo, 20CrMnTi toughened), and surface treatments (induction hardening, nitriding) are offered.
Frequently Asked Questions (FAQ)
Q: Can KH875 Hy-Vo chains replace existing OEM silent chains directly?
A: Yes, our KH875 38.1mm (1.5") pitch chains are designed to strict ISO/ANSI standards and function as direct drop-in replacements for major brand Hy-Vo and inverted tooth chains.
Q: Do you supply matching custom silent chain sprockets?
A: Absolutely. We manufacture precision-machined sprockets tailored to your exact shaft sizes, keyways, spline profiles, and heat treatment requirements.
Need a Fast OEM Quote or Engineering Consultation?
Send us your technical drawings, pitch specs, or OEM part numbers today for immediate technical support and competitive wholesale pricing.
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