70 Series - Medium Torque Top Entering Mixer

The most specified and most proven mechanical design technology in the world makes Lightnin Series 70 Mixers ideal for a wide range of applications.

Product Benefits and Features

Wide Range of Power: Covers 0.75–150kW (1–200HP) with double and triple reduction gearing; speeds from 280 to 9 rpm
Motor Mounting Options: Motor pedestal (up to 30kW/40HP) for easy alignment; motor brackets available for all sizes
Full Spectrum of Impellers: Optimized impeller selection for enhanced process results
Variable Speed Drives: Compatible with variable frequency drives for speed flexibility
Right Angle Gearbox Design: Ideal for installations with limited headroom
Guaranteed Performance: Custom recommendations for impeller, speed, shaft length, and more—backed by warranty
Tested 100%: Every Series 70 and 80 mixer undergoes non-load testing before shipment

Extended Choice of Sealing Options

The 70 Series offers a wide selection of mechanical seals to meet diverse application needs:

Dry-running single mechanical seals (standard)
Double mechanical seals with integral bearings
Lightnin Cartridge seals for easy replacement

Additional Technical Highlights

Motor pedestals up to 30kW (40HP) for alignment; brackets available for all sizes
Bearings exceed AGMA standards for extended service life
Factory-tested mechanical seals with cartridge design
Helical change gears easily replaceable for evolving process needs
Self-setting seals for simplified maintenance
All guarding meets OSHA and CE standards; ATEX-compliant options available

Change Gears
Easily replaceable, helical gears are standard, so speed changes are easily made to meet new process requirements. No special tools. No need to dismantle the mixer or remove it from the tank. Heavy wall pinions provide maximum protection against damage from accidental overloads.

Positive Direct Drive
Mixer shaft slides directly into the quill, where it is rigidly coupled by a key and keyway. This design is the veteran of millions of hours of mixing.

Coupling Guards
Coupling guards meet CE and OSHA standards and protect people from moving parts.

Spiral Bevel Gears
High-efficiency spiral bevel gear and pinion are quiet running. They are precision generated, match lapped, individually mounted and micrometer checked to make sure.

Motor Mount
Standard mounting assures positive alignment for flange or foot mounted motors. A machine earth grounding point is provided as standard.

Pedestal Cover
Personnel are protected from rotating parts by a guard design that meets CE and OSHA requirements.

Oil Dam
Leakage down the mixer shaft is avoided by an oil dam around the quill shaft.

Splash Lubrication
Rotating gears dip into the oil sump and assure a constant flow of oil to all surfaces. No need for pumps or piping.

Beyond AGMA
Bearings are sized far beyond AGMA requirements to minimize maintenance and provide long service life.

MECHANICAL SEALS
The replaceable cartridge design, a Lightnin original, is standard on Series 70 units. Light in weight. Easy to replace. Our design offers unrivaled convenience. Integral stuffing box and open tank designs also available. Each Lightnin Cartridge seal is still tested 100% prior to shipment and offers the very best in reliability while our other seal selection meet performance. Additionally we continue to supply low and high pressure stuffing boxes. All fits are dowel or rabbet to assure alignment. You’ll find this Lightnin design makes for easy repacking.

LightninLube

As part of our commitment to our Customers and their operations, SPX FLOW has introduced LightninLube™, a range of gear oil for our Lightnin Mixers. It is available to order with your new equipment or as a maintenance item throughout the life of your equipment. LightninLube is manufactured to AGMA Standard 8005-D94. Our synthetic oils are designed to give you a wide operating range and are available in ISO 100, ISO 150, ISO 220 and ISO 320 grades.