Crab Dolly Riser Section 1R
Ergonomic heavy-duty cinema dolly operator accessory precision-crafted from high-tensile structural alloys and high-density cushioning. Engineered with standard 1-1/8 inch Junior pin interface, providing solid 360-degree rotation and rock-steady camera operator support during complex dolly moves. Backed by the First-Ever Full Lifetime Warranty.
SKU:
DAC-00SCR-R10
Crab Dolly Riser Section 1R
Engineering Fact Sheet & Mechanical Specifications
Performance & Load Metrics Rigging Certified
| Working Load Limit | 800 lbs (Pneumatic Tires) / 1,200 lbs (Skate Wheels) / 1,500 lbs (Steel Track) |
| Mechanical Architecture | True Ackermann 2-Wheel Rear Steer / 4-Wheel All-Wheel Crab Steering |
| Track / Sled Standard | 24.5" (62.2 cm) Center-to-Center Standard Cinema Track Gauge |
| Safety Design Factor | 5:1 ASME B30.26 Cinema Rigging Safety Factor |
Materials Science & Metallurgy ASTM Standards
| Primary Material | 6061-T6 Structural Aluminum & ASTM A513 Type 5 DOM Steel |
| Structure / Section | 1.50" OD (11-Gauge / .120" Wall) DOM Seamless Steel Track / Aircraft Billet Plate |
| Mounting Interface | Universal Push/Pull Sockets, 1-1/8" Junior Receiver & 5/8" Baby Pin Options |
| Corrosion Protection | ASTM B117 1,000+ Hours Mil-Spec Anodized / Zinc-Nickel Plating |
Cinema Rigging Physics & Mechanical Safety Protocols
Hollywood Stage StandardsEngineered with true Ackermann steering tie-rod linkage. In tight studio turns, the inner wheel turns at a sharper angle than the outer wheel (ฮธi > ฮธo), eliminating tire scrubbing, floor squeal, and unwanted camera jarring during dynamic curved tracking moves.
Equipped with high-rebound 85A polyurethane skateboard wheels on ABEC-7 sealed bearings. Rolling resistance coefficient is ฮผrr = 0.015 on steel track, requiring merely 18.0 lbs of tractive push force to smoothly propel a fully rigged 1,200 lb camera dolly setup (Fpush = ฮผrr ร W).
Precision 24.5" center-to-center standard track gauge. 45ยฐ curved sections feature roll-bent 1.5" DOM steel rails (11-gauge) engineered to assemble an exact 20ft outer diameter (17ft 11in inner diameter) 360ยฐ seamless circular tracking layout using exactly 8 sections.
6061-T6 aircraft aluminum welded ladder chassis and cold-drawn DOM tubular rails support up to 1,500 lbs working load limit. Structural deflection across 8-foot unsupported spans remains under 0.030 inches under maximum camera package and dual-operator payload.
Complete Your Cinema Tracking Package
Engineered to integrate seamlessly with Norms Heavy-Duty Steel Dolly Track, Skateboard Track Wheels, Track Wedges, and Cordura Sandbags.
First-Ever Full Lifetime Warranty
100% factory coverage on structural welds, castings, and mechanical components. Built for generations of cinema production.