QXG206 Drive Chain

Name: China Customized QXG206 Drive Chain Manufacturers, Suppliers and Factory - Hangzhou Ocean
Brand: Ocean
SKU: 306249921

The QXG206 drive chain delivers 30 kg single-point capacity on a 206 mm pitch with steel-ball bearing wheels. Ideal for enclosed-track painting and coating conveyor systems requiring tighter horizontal turns than 200 mm variants.

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Product Introduction

Hangzhou Ocean Industry Co., Ltd. is one of the most experienced manufacturers and suppliers of qxg206 drive chain in China. Welcome to wholesale customized qxg206 drive chain at competitive price from our factory. Good service and quality products are available.

QXG206 Drive Chain – 206 mm Pitch Enclosed-Track Conveyor Chain with Steel-Ball Bearing Wheels

Compact pitch geometry and steel-ball bearing mobility converge in the QXG206 drive chain, an enclosed-track overhead conveyor chain engineered for mid-range load scenarios that demand tighter curvature than what 200 mm pitch models can accommodate. With a 206 mm chain pitch, each link segment occupies a marginally larger arc footprint than QXG200 equivalents, yet this incremental difference unlocks significantly reduced minimum horizontal turn radii - a decisive factor when routing conveyor paths through congested paint booths, drying ovens, or multi-stage dip tanks.

As a single guide conveyor chain operating within a closed I-beam track envelope, the QXG206 shields its running surfaces from ambient dust, overspray, and solvent mist - conditions endemic to painting line chain deployments. The steel-ball bearing wheel architecture minimises rolling resistance across prolonged duty cycles, sustaining consistent line speed without the progressive drag escalation that plain-bushing designs exhibit. When paired with a fixed hanging plate chain or open-hanger variant, the same chain backbone accommodates workpiece carriers up to 30 kg per attachment point, squarely positioning the QXG206 as the industrial conveyor system chain of choice for medium-capacity finishing and surface-treatment workflows.

Manufacturers evaluating whether to upgrade from a 200 mm pitch conveyor chain will find that the QXG206's 6 mm pitch extension translates into improved mesh geometry at the drive sprocket, smoother engagement transitions, and reduced tooth-tip impact loading - benefits that compound over multi-year operating horizons in heavy duty conveyor chain installations.

Operating Environment & Suitability Profile

Parameter	Specification / Guidance
Temperature Range	–20 °C to +200 °C (continuous). High-temperature sealed bearing variants extend upper limit to 250 °C for oven-exposed segments.
Humidity & Moisture	Enclosed-track construction inherently shields chain internals from condensation and wash-down spray. For outdoor or high-humidity installations, specify galvanized or zinc-nickel surface treatment.
Chemical Exposure	Compatible with mild alkali cleaning solutions, waterborne paint overspray, and powder-coat atmosphere. Avoid prolonged immersion in strong acid or chlorine-based degreasers.
Speed Envelope	Fixed-speed configurations: 3.9–15.4 m/min. Variable-frequency drives support 0.34–5.0 m/min for process-controlled staging.
Duty Cycle	Designed for 24/7 continuous operation. Periodic 15-minute lubrication intervals recommended for chains exceeding 800 m total length.
Track Enclosure	Mandatory enclosed I-beam track (4# / 6# I-beam specification). Open-track deployment voids dust-exclusion warranty and increases bearing wear rate.

Engineering Selection & Configuration Guidance

Selecting the correct QXG206 variant requires matching three independent variables: load class, hanger architecture, and turn-radius constraints. The following decision framework simplifies this process:

Load class alignment. If every attachment point carries ≤30 kg (including carrier + workpiece), the standard QXG206S single-guide configuration satisfies the requirement. For loads approaching 30 kg but requiring dual directional stability, choose QXG206D (double-guide) and accept the higher per-meter chain weight.

Hanger type selection. Fixed hanging plate chain variants (HH designation) offer maximum rigidity for static loads and are preferred in automotive e-coat and dip-tank lines where swing must be minimised. Open-hanger (HA) variants permit quick carrier changeover - essential in multi-product paint lines that switch fixture configurations between production campaigns.

Turn-radius validation. The QXG206's minimum horizontal turn radius sits between those of the QXG200 and QXG240. Verify that every planned curve in your layout exceeds this minimum by at least 10% margin to prevent wheel-flange contact and premature edge wear.

Drive sprocket tooth count. For the 206 mm pitch, sprockets with 6–8 teeth provide adequate wrap angle for lines ≤50 m. Lines exceeding 150 m should specify 10+ teeth to distribute drive engagement force across more contact points and reduce single-tooth stress.

Why 206 mm Pitch? - QXG206 vs QXG200 Technical Comparison

The QXG206 and QXG200 share the same 30 kg single-point load class, yet their pitch difference produces meaningful engineering consequences that affect layout flexibility and long-term operating economics:

Dimension	QXG200	QXG206
Chain Pitch	200 mm	206 mm (+3%)
Single-Point Load	30 kg	30 kg (same class)
Min. Horizontal Turn Radius	400 mm (typical)	~412 mm (marginally larger)
Sprocket Engagement Arc	Standard 6–8 tooth wrap	Improved mesh geometry, smoother tooth entry
Link-to-Link Flexibility	Standard bi-directional articulation	Slightly wider articulation envelope per joint
Chain Weight per Meter	~1.8 kg/m (S variant)	~1.9 kg/m (S variant, proportional to pitch)
Best-fit Scenario	General-purpose paint lines with ample curve space	Lines where every millimeter of curve radius matters - congested booths, multi-loop layouts

In practical terms, the QXG206 drive chain is the optimal choice when your conveyor routing cannot accommodate the QXG200's minimum turn radius without compromising process flow, yet the 30 kg load ceiling remains sufficient. It fills the niche between the compact 200 mm class and the heavier 240/250 mm families.

Technical Specifications

Three hanger configurations are available within the QXG206 series. All share the same 206 mm pitch and 30 kg single-point load ceiling; the differentiation lies in carrier attachment style and guide-wheel count.

Parameter	QXG206S (Single Guide, Fixed Hanger)	QXG206HA (Single Guide, Open Hanger)
Chain Pitch	206 mm	206 mm
Single-Point Load Capacity	30 kg	30 kg
Allowable Tensile Force	3.0 kN	3.0 kN
Breaking Force	7.0 kN (minimum)	7.0 kN (minimum)
Chain Weight (approx.)	~1.9 kg/m	~1.85 kg/m
Track Specification	4# / 6# enclosed I-beam	4# / 6# enclosed I-beam
Horizontal Wheel Diameter	~88 mm (steel-ball bearing)	~88 mm
Vertical Wheel Diameter	~68 mm	~68 mm
Min. Horizontal Turn Radius	~412 mm	~412 mm
Min. Vertical Bend Radius	~3 000 mm	~3 000 mm
Operating Temperature	–20 °C to +200 °C	–20 °C to +200 °C
Surface Treatment (standard)	Carbonitriding (carbon–nitrogen quench)	Carbonitriding
Surface Treatment (optional)	Galvanizing / zinc–nickel / powder coat	Galvanizing / zinc–nickel
Hanger Type	Fixed plate (HH-style)	Open / split plate with spring clip
Guide Configuration	Single guide wheel per link	Single guide wheel per link

Note: Double-guide variant QXG206D is available upon request for applications requiring enhanced directional stability. It carries a higher per-meter weight (~2.2 kg/m) and wider track engagement profile.

Environmental Operating Envelope

Environmental Factor	Operating Range	Notes & Mitigation
Ambient Temperature	-20 °C to +250 °C (grade-dependent)	Below -20 °C, bearing grease stiffens; specify low-temp grease. Above 250 °C, seals degrade; use HA grade.
Relative Humidity	10% – 95% (non-condensing)	Condensation cycles drive corrosion at pin joints; upgrade to zinc-plated or galvanized treatment in tropical climates.
Chemical Exposure	Mild acid/alkali vapours acceptable	Resistant to paint solvent vapours, electroplating mist, detergent solutions. Avoid concentrated mineral acids or chlorine gas.
Particulate Loading	Up to 5 mg/m³ airborne dust	Sealed bearings exclude particulate; abrasive dust accelerates wheel tread wear - inspect monthly in foundry areas.
Conveyor Speed	0.5 – 15 m/min (grade-dependent)	Below 0.5 m/min, lubricant film may not form. Above 15 m/min, derailment risk increases at curves.
Duty Cycle	Continuous (24/7) rated	Ensure drive motor thermal protection set for S1 continuous duty, not S2 short-time.

Installation & Alignment Precautions

Proper installation of the QXG206 drive chain within an enclosed-track system demands attention to six critical checkpoints. Failure to observe these guidelines accelerates bearing wear, induces uneven tension distribution, and may void warranty coverage:

Track joint alignment. Every I-beam rail joint must present a flush internal surface. Misaligned joints create step-height impacts that propagate micro-cracks in wheel flanges over thousands of pass cycles. Verify joint flatness with a straightedge before chain insertion.

Directional orientation. QXG206 links are directional - the open side of each cross-joint must face the direction of chain travel. Installing links in reverse orientation causes guide-wheel interference at curve entry points.

Connection pin security. After assembling each link pair, confirm that the cross-pin retaining clip or rivet head is fully seated. Partially engaged retaining features are the leading cause of in-service link separation.

Tension set-point. Initial chain tension should be set to 3–5% of allowable tensile force (approximately 90–150 N for QXG206). Over-tensioning increases bearing load and wheel wear; under-tensioning causes catenary sag and skip-tooth engagement at the drive sprocket.

Empty-run verification. Before loading workpiece carriers, run the chain empty for at least 30 minutes. Listen for irregular noise at drive sprocket engagement and at each horizontal/vertical curve. Any rhythmic clicking or grinding indicates misalignment requiring correction before production start.

No mixed-generation chains. Never splice new QXG206 links into a previously worn chain run. Differential pitch elongation between new and worn segments creates uneven load distribution and premature failure at the splice boundary.

Power Transmission & Working Principle

The QXG206 drive chain operates as the primary traction element within an enclosed-track overhead conveyor system, converting rotational energy from the drive motor into linear chain movement that carries suspended workpieces through sequential process stages.

The power delivery sequence follows a five-stage mechanical pathway:

Motor input. A geared motor (typically 0.55–1.5 kW for QXG-class lines) transmits torque through a flexible coupling to the drive shaft.

Sprocket engagement. The drive sprocket's tooth profile meshes with each 206 mm pitch link as it enters the wrap arc. The marginally wider pitch compared to 200 mm chains distributes engagement force over a slightly larger contact area, reducing per-tooth peak stress.

Chain propagation. Driven links pull the entire chain loop through the enclosed I-beam track. Steel-ball bearing wheels at each cross-joint rolling contact minimise friction, enabling long-distance (>200 m) single-drive lines without auxiliary caterpillar drives.

Load carriage. Hanger plates (fixed or open) attached at designated link intervals suspend workpiece carriers. Each attachment point bears up to 30 kg; total line load capacity scales with chain length and drive power rating.

Return-leg tension balance. A gravity or spring-loaded take-up unit at the line's far end maintains consistent chain tension, compensating for thermal expansion, wear elongation, and load-induced stretch across the full circuit.

FAQ

Q: 1:What minimum order quantity applies to the QXG206 drive chain?

Standard production runs begin at 100 metres per order. Shorter sample lengths (20–50 m) are available for prototype validation and layout testing, subject to a per-metre surcharge that reflects non-batch production costs.

Q: 2:Can QXG206 links operate within a QXG200 track installation?

A:The 6 mm pitch difference prevents direct link substitution: QXG206 links will not mesh with a QXG200 drive sprocket, and the marginally different cross-joint geometry may cause interference at QXG200-optimised curve sections. A full track-and-sprocket conversion is required when migrating from 200 mm to 206 mm pitch.

Q: 3. Is the QXG206 available with both fixed and open hanger plates?

A: Yes. The QXG206S-HH variant carries a forged fixed hanger plate for maximum rigidity, while the QXG206S-HA variant uses a spring-clip open hanger for rapid carrier changeover. Both share identical pitch, load rating, and bearing specification.

Q: 4:What drive motor power is recommended for a 200-metre QXG206 line?

A: For a 200 m enclosed-track line carrying 30 kg per attachment point at 8 m/min, a 0.75 kW geared motor with a 6-tooth drive sprocket typically suffices. Lines exceeding 300 m or operating at >12 m/min should specify 1.1–1.5 kW drives with 8+ tooth sprockets.

Q: 5.What lead time should I plan for a 500-metre QXG206 order?

A: Standard orders of 100–300 m ship within 25–30 working days after deposit confirmation. Orders exceeding 500 m or requiring custom hanger configurations may extend to 40–50 working days. Sample quantities (under 50 m) can often be dispatched within 10–15 working days from existing stock.

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