How do I choose the right diameter for my lamp head weight?
The required diameter depends on both the weight of your lamp head and the arm length. As a general rule: for lamp heads under 0.5 kg, an 8–10mm diameter is sufficient for lengths up to 400mm. For heavier heads (0.5–1.5 kg), choose 12–16mm. For industrial lamps over 1.5 kg, our 20–25mm heavy-duty series is recommended. Refer to our Load Capacity Table above for precise specifications, or contact our engineers for a custom recommendation.
What is the maximum length for a stiff gooseneck arm?
Our standard catalog offers lengths up to 1000mm (1 meter). For custom orders, we can manufacture gooseneck arms up to 1500mm while maintaining adequate rigidity. Beyond 1000mm, we recommend using our heavy-duty series (16mm+ OD) to ensure proper stay-put performance. Multi-section designs with intermediate joints are available for applications requiring even greater reach.
Can these goosenecks be used in outdoor lighting?
Yes, with the appropriate surface treatment. Our standard chrome-plated arms are suitable for covered outdoor environments. For fully exposed outdoor applications, we recommend our powder-coated or stainless steel options with IP65-rated sealing at connection points. We also offer marine-grade stainless steel (316L) for coastal or high-humidity environments.
What is the difference between stay-put and standard goosenecks?
Standard goosenecks use simple corrugated tubing that may gradually drift under load. Our stay-put goosenecks feature interlocked triangular steel segments with a spring steel core, creating a friction-lock mechanism that holds position firmly—even under continuous vibration. Our arms are tested to maintain position through 30,000+ adjustment cycles without degradation.
