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Heavy-Duty Telescoping Boom Arm with Junior/Baby Combo Mount (6.5' - 14')
Professional heavy-duty cinema telescoping boom arm extending from 6.5 ft to 14 ft. Engineered from cold-drawn high-tensile alloy tubing with an integrated 1-1/8" Junior mounting fulcrum and dual Junior/Baby front receiver. Designed for precise overhead luminaire and modifier placement with rear counterweight pin for sandbags or barbell plates. Backed by the First-Ever Full Lifetime Stand Warranty.
SKU:
BAB-BZAEX-20R
Heavy-Duty Telescoping Boom Arm with Junior/Baby Combo Mount (6.5' - 14')
Engineering Fact Sheet & Mechanical Specifications
Reach & Payload Metrics Imperial / Metric
| Primary Mounting Mount | 1-1/8" Junior Pin & 5/8" Baby Pin Solid Stainless Steel |
| Working Load Limit (WLL) | 45.0 lbs (20.4 kg) Retracted at 6.5 ft / 15.0 lbs (6.8 kg) Extended at 14 ft |
| Torque & Bending Limit | Ο = r Γ F β€ 280 NΒ·m (206.5 ft-lbs) on Junior Fulcrum Pivot |
| Safety Design Factor | 5:1 ASME B30.26 / B30.10 |
Materials Science & Metallurgy Rigging Standard
| Structural Alloy | ASTM A513 Type 5 DOM 1026 Carbon Steel / 6061-T6 Structural Aluminum |
| Section Spec | Schedule 40 (1.900" OD Γ .145" Wall) / 14-Gauge (.083" / 2.11mm) |
| Friction Brake Disc | CDA 360 Solid Brass |
| Corrosion Rating | ASTM B841 (1,000+ Hrs Salt Fog) |
Cinema Rigging Physics & Fulcrum Safety
Hollywood Rigging ProtocolsFulcrum Moment Balance
3:1 REAR COUNTERWEIGHTCalculate required counterweight using W_cw = (W_payload Γ L_front + W_arm Γ L_cg) / L_rear. Always secure rear counterweight sandbags or barbell weights with safety linchpins before hoisting lighting fixtures.
1-1/2" Speed-Rail Rigidity
SCHEDULE 40 PIPEStandard 1.900" OD Schedule 40 6061-T6 aluminum pipe delivers a section modulus of Z = 0.326 inΒ³ and moment of inertia Ix = 0.310 in&sup4;, eliminating structural deflection and bending oscillations over extended overhead reaches.
Right-Hand Rigging Invariant
CLOCKWISE GRAVITY LOCKAlways rig cantilevered arms so gravity acts clockwise relative to the T-handle lock. Downward fixture weight actively tightens the brass friction disc against the knuckle, preventing catastrophic slip.
Complete Your Rigging & Boom Setup
Pairs seamlessly with 4-1/2" Lollipop Grip Heads, Heavy Combo Stands, 1-1/2" Speed-Rail pipe, and 25β35 lb heavy saddle sandbags.
Lifetime Stand Warranty
All Norms rigging hardware and stands are backed by a complete lifetime warranty against manufacturing defects.
Product Info
| Boom Variation | Baby Boom or Junior Boom |