Vogelsang XRipper Twin-Shaft Grinder installed at a wastewater treatment plant. Vogelsang sewage grinders are the best wastewater grinders in the industry. Envirep is the vogelsang wastewater grinder supplier in PA, MD, DE, and DC

Vogelsang’s Twin-Shaft Grinder is Changing the Game

Vogelsang XRipper Sewage Grinder being removed for preventative maintenance at a wastewater treatment plant
An inline Vogelsang XRipper is removed from service for preventative maintenance.

Twin-shaft grinders are known as the toughest solids reduction equipment available. They are praised for their ability to cut through tough solids and stringy waste. Everyone loves them. Well, except for the guys who service them. Unless you’re talking about Vogelsang’s Twin-Shaft Grinder known as the XRipper. 

Traditional twin-shaft grinders are built with two long cutter stacks made of blades and spacers — as many as 150 blade/spacer sets on the largest grinders. When it comes time to service these things — or worse, when they jam or fail — the blades and spacers come apart easily for repair. But that’s when things go sour. Maintenance guys say that putting other twin-shaft grinder blades back together is a nightmare. Getting the spacers just right takes hours. And if you don’t see that you’ve misaligned something soon enough, you’re going to have to take the whole thing apart and start over.

So Vogelsang did it differently. Instead of the nasty stack of blades and spacers, the XRipper Twin-Shaft Grinder was engineered with two monolithic Ripper Rotors, each made from one solid block of steel. No spacers, nothing to align or stack. The XRipper is also designed with no lower bearings and an easy-to-replace cartridge mechanical seal.

A Vogelsang XRipper wastewater grinder ripper blade and seal change
Illustration depicting an XRipper ripper blade and seal change performed while the housing remains inline.

Unlike a traditional twin-shaft grinder, the XRipper grinder is easy to maintain. Everything can be done inline without removing any connected piping. Simply remove a few retaining hex nuts and the unit can be lifted vertically while the flanges and housing remain connected to the piping.  

The XRipper’s ripper blades are both removed at the same time and come off in solid sections versus individual pieces like ordinary twin-shaft grinders. Typical routine service such as changing ripper blades takes only a fraction of the time required to service a typical twin shaft grinder. In addition, there are no cartridge-style parts that require factory refurbishment.

Vogelsang also has made it easy to replace a traditional twin-shaft grinder with a drop-in replacement for many common grinders in the market.   

Envirep is the sales representative for Vogelsang in Pennsylvania, New Jersey, Delaware, Maryland and Washington, D.C.

By Joshua Price, Service Manager, Envirep