2-1/2" Grip Head
Industry-standard 2-1/2" cinema grip head engineered in Hollywood, California. Features 4 precision-broached V-groove jaw openings (5/8", 3/8", 1/2", 1/4") ensuring positive 4-point tangent contact without crushing tubes. Equipped with a CDA 360 solid brass friction brake disc delivering up to 150 ft-lbs non-slip locking torque. Oversized cast ergonomic T-handle provides smooth, high-leverage clamping.
SKU:
GSA-GAPRX-212
2-1/2" Grip Head
Engineering Fact Sheet & Mechanical Specifications
V-Groove Jaw Architecture 4-Point Tangent Grip
| V-Groove Broached Openings | 5/8" (16mm), 3/8" (9.5mm), 1/2" (12.7mm), 1/4" (6.35mm) |
| Locking Torque Rating | 150 ft-lbs (203 N·m) |
| T-Handle Leverage | Oversized Ergonomic Cast Alloy |
| Safety Design Factor | 5:1 ASME B30.26 / B30.10 |
Metallurgy & Friction Tribology Anti-Galling Brass
| Knuckle Body Alloy | 6061-T6 Cast / CNC Aluminum |
| Friction Brake Disc | CDA 360 Solid Brass (3.0% Pb) |
| Mounting Pin / Interface | 5/8" |
| Corrosion Protection | Hardcoat Anodize / Zn-Ni |
Grip Head Tribology & Hollywood Rigging Protocols
Set Safety ProtocolsCDA 360 Solid Brass Friction Disc
150 FT-LBS LOCKINGSolid CDA 360 free-cutting brass friction discs eliminate galling and aluminum-on-aluminum seizure under extreme clamp tension, providing consistent, non-slip locking torque up to 150 ft-lbs (203 N·m).
Precision Broached V-Grooves
4-POINT TANGENT CONTACTBroached V-groove channels establish positive 4-point tangent contact around mounting pins and tubes. This prevents crushing hollow gobo tubes while completely preventing axial slip and rotation.
The Right-Hand Rule of Rigging
CLOCKWISE GRAVITY LOCKAlways orient the grip head so the downward load moment acts clockwise on the T-handle. Gravity actively tightens the knuckle brake discs; reversing the orientation causes premature loosening and fixture drop.
Complete Your Grip Rigging Package
Pairs seamlessly with 20"–40" Extension Gobo Arms, C-Stands, Combo Stands, and Butterfly Frames.
Standard Hardware Lifetime Warranty
All Norms grip heads and rigging knuckles are backed by a complete lifetime warranty against manufacturing defects.
Product Info
| Color | Polished or Void Black |