Chain Knockers

Renssi Chain Knockers deliver powerful cleaning action to effectively remove rust, scale, and debris from a wide range of pipes. Each tool features solid carbide tips brazed directly to the chain links for maximum cleaning efficiency and long service life. Available in both sleeve and circular chain styles, they come in a variety of cutting options — including starbit carbide tips, sawbit carbide tips, drill head configurations, and non-carbide chains designed for use in PVC pipes. Multiple chain configurations are available to suit specific pipe sizes and job requirements.

SAWBIT CHAIN KNOCKERS

Sleeve Chains with rectangular carbide sawbits for general cleaning and descaling

RS 0000 SERIES

Ideal for: 6mm, ¼” cable
Size Range: 35mm (1.5") to 100mm (4")

RS 1000 SERIES

Ideal for: 8mm, 5/16” cable
Size Range: 35mm (1.5") to 200mm (8")

RS 2000 SERIES

Ideal for: 10mm, ⅜” cable
Size Range: 50mm (2") to 200mm (8")

RS 3000 SERIES

Ideal for: 12mm, ½” cable
Size Range: 50mm (2") to 300mm (12")

DRILL HEAD CHAINS WITH SAWBITS

Sleeve Chains with rectangular carbide sawbits & Drill Head for descaling & unclogging blockages

RS-DR 0000 SERIES

Ideal for: 6mm, ¼” cable
Size Range: 35mm (1.5")

RS-DR 1000 SERIES

Ideal for: 8mm, 5/16” cable
Size Range: 50mm (2") to 200mm (8")

RS-DR 2000 SERIES

Ideal for: 10mm, ⅜” cable
Size Range: 50mm (2") to 200mm (8")

RS-DR 3000 SERIES

Ideal for: 12mm, ½” cable
Size Range: 50mm (2") to 200mm (8")

STARBIT CHAIN KNOCKERS

Sleeve Chains with carbide starbits (3 teeth) that are sharper than the sawbits for tougher descaling jobs

RS-WS 0000 SERIES

Ideal for: 6mm, ¼” cable
Size Range: 35mm (1.5") to 75mm (3")

RS-WS 1000 SERIES

Ideal for: 8mm, 5/16” cable
Size Range: 50mm (2") to 150mm (6")

RS-WS 2000 SERIES

Ideal for: 10mm, ⅜” cable
Size Range: 50mm (2") to 200mm (8")

RS-WS 3000 SERIES

Ideal for: 12mm, ½” cable
Size Range: 50mm (2") to 200mm (8")

DRILL HEAD CHAINS WITH STARBITS

Sleeve Chains with carbide starbits (3 teeth) & Drill Head for tougher descaling jobs, root infiltration and hard debris

RS-WS-DR 1000 SERIES

Ideal for: 8mm, 5/16” cable
Size Range: 50mm (2") to 150mm (6")

RS-WS-DR 2000 SERIES

Ideal for: 10mm, ⅜” cable
Size Range: 50mm (2") to 150mm (6")

RS-WS-DR 3000 SERIES

Ideal for: 12mm, ½” cable
Size Range: 75mm (3") to 200mm (8")

CHAIN KNOCKERS WITHOUT CARBIDE

Sleeve Chains without carbides for PVC, fragile, and lined pipes and for light cleaning

RS-NC 0000 SERIES

Ideal for: 6mm, ¼” cable
Size Range: 35mm (1⅜”) to 125mm (5")

RS-NC 1000 SERIES

Ideal for: 8mm, 5/16” cable
Size Range: 35mm (1⅜”) to 200mm (8")

RS-NC 2000 SERIES

Ideal for: 10mm, ⅜” cable
Size Range: 50mm (2") to 200mm (8")

RS-NC 3000 SERIES

Ideal for: 12mm, ½” cable
Size Range: 50mm (2") to 200mm (8")

CIRCULAR CHAIN KNOCKERS

Circular Chains with rectangular carbide sawbits for general cleaning and descaling

WC 1000 SERIES

Ideal for: 8mm, 5/16” cable with 4mm, ⅛” chain
Size Range: 50mm (2”) to 150mm (6")

WC 2000 SERIES

Ideal for: 10mm, ⅜” cable with 4mm, ⅛” chain
Size Range: 50mm (2”) to 300mm (12")

WC 3000 SERIES

Ideal for: 12mm, ½” cable with 4mm, ⅛” chain
Size Range: 75mm (3") to 300mm (12")

WC 3000-5 SERIES

Ideal for: 12mm, ½” cable with 5mm, 3/16” chain
Size Range: 75mm (3") to 400mm (16")

CIRCULAR CHAIN KNOCKERS WITHOUT CARBIDE

Circular Chains without carbides for PVC, fragile, and lined pipes and for light cleaning

NC 1000 SERIES

Ideal for: 8mm, 5/16” cable with 4mm, ⅛” chain
Size Range: 50mm (2”) to 150mm (6")

NC 2000 SERIES

Ideal for: 10mm, ⅜” cable with 4mm, ⅛” chain
Size Range: 50mm (2”) to 300mm (12")

NC 3000 SERIES

Ideal for: 12mm, ½” cable with 4mm, ⅛” chain
Size Range: 75mm (3") to 300mm (12")

NC 3000-5 SERIES

Ideal for: 12mm, ½” cable with 5mm, 3/16” chain
Size Range: 75mm (3") to 400mm (16")