Brand:

• JBL

Models:

• ACK1
• WK-4S

Overview:

This article provides an overview of the ACK1 and WK-4S Caster kits, including their intended applications, compatible JBL loudspeaker models, key features, installation requirements, and technical specifications.  It also covers the hardware included with each kit, such as caster assemblies and mounting bolts, along with compatibility considerations for supported loudspeaker enclosures.

Product Information and Specifications

ACK1:

• Universal caster kit for JBL SRX900 Series subwoofers.
• Black housing for discreet look
• Black polyurethane wheel
• Anti-rattle features for vibration-free operation

Technical Specifications:

• Construction 
  Base: Steel with black paint
  Wheel: Black polyurethane 
• Caster Size: 90 mm (2.5 in) 
• Caster Load Capacity: 100 kg (220 lbs) per caster 
• Dimensions (H x W x D): 121 mm x 63 mm x 127 mm (4.8 in x 2.5 in x 5.0 in) 
• Net Weight:  3.4 kg (7.5 lbs) 
• Shipping Weight:  3.4 kg (7.5 lbs) 3.9 kg (8.5 lbs)
• Included: (4) Casters | Installation Hardware
   

ACK1 Spec Sheet  SRX900 Rigging Manual

WK-4S:

• Compatible speakers: VRX, SRX700 and SRX800 series subwoofers.
• Provides mobility: Allows the WK 4S gantry crane to be easily moved around the work area.
• Heavy-duty design: Typically includes four durable swivel casters built for industrial use.
• Safety features: Equipped with wheel and/or swivel locks to secure the crane during lifting.
• Easy installation: Mounts directly to the gantry legs using the provided hardware.
• Industrial applications: Ideal for warehouses, maintenance shops, fabrication, and manufacturing environments.

Technical Specifications:

• Carrying Weight: 60 kg (130 lb) per Wheel
• Dimensions (H x W x D): 108 mm x 78.5 mm x 122 mm (4.25 in x 3.1 in x 4.80 in) 
• Fixing slots: 12 x 9 mm (.48 x .35 in)

WK-4S Specifications  

What Size of Bolts are Used in the WK-4S Caster Kit?