12" Fixed Baby Offset Arm (5/8" Pin to 5/8" Receiver)
Solid steel offset arm engineered to cantilever lighting fixtures and grip hardware away from vertical stand risers. Manufactured in Hollywood, California from ASTM A513 DOM steel with precision welded mounting pins for zero-deflection on-set rigging.
SKU:
BAA-FZRBT-100
12" Fixed Baby Offset Arm (5/8" Pin to 5/8" Receiver)
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) | 30.0β75.0 lbs (13.6β34.0 kg) Direct Vertical / 15.0β35.0 lbs (6.8β15.9 kg) Extended Offset |
| Torque & Bending Limit | Ο = r Γ F β€ 95 NΒ·m (70.1 ft-lbs) |
| 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 | Cold-Drawn Over Mandrel BWG 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.
Standard Hardware Lifetime Warranty
All Norms rigging hardware and stands are backed by a complete lifetime warranty against manufacturing defects.