See how J.Lanfranco has helped the mining and processing industry minimize unplanned shutdowns and increase plant throughput.

THE PROBLEM

Shaker tables are subjected to some of the most demanding operating conditions: Intense shock, impact, and vibration.

They are often the bottleneck of mining operations since premature loosening of screens cause unplanned shutdowns.

Unscheduled screen change outs result in:

• Reduced plant throughput.
• Reduced profitability.
• High labor costs.
• Increased warranty costs for screen OEMs if minimum run cycles are not met.

THE SOLUTION

Numerous customers have switched over to both ESL and

ERM locknuts for in-operation performance, as well as for

the ease and speed of change outs.

One customer required a ¾ UNC Gr. 8 ERM nut with a crimped washer that would provide:

• Easy initial installation with no galling.
• Ability to loosen and re-tighten without full
• removal for quick change outs.
• No damage to bolt threads.
• Washer retention to withstand +10,000lbs of force.

They also needed the first parts within three weeks.
It took some effort, but The Nut Jobs at J.Lanfranco came through.

Drawings and CAD files were submitted within one week, and the first 700 pieces were produced and delivered within two weeks.

The ERM nuts provided the customer with 10 on/offs and met all criteria.

ERM series locknut includes a crimped washer

ERM Locknut

The one-piece ERM is a great time saver with its integrated disc spring washer. The result: quick installations and absolute tension maintained under dynamic loads. Ideal for imperfect bearing surfaces and electrical contacts.

Size Range
Metric: M4-M22 • Imperial: Nº10-7/8″

Material Metric
Steel: Class 8 Steel • Class 10 Steel • Class 12 Steel
Stainless Steel: A2-70 Stainless Steel • A4-80 Stainless Steel

Material Imperial
Steel: Grade 5 Steel • Grade 8 Steel • Alloy Steel 180KSI (Grade 10)
Stainless Steel: AISI 304L Stainless Steel • AISI 316L Stainless Steel

ESL Locknut

This dual-slotted, all-metal, self-locking hex nut has impressive characteristics: extremely reliable, consistent prevailing torque, and no galling. The dual-locking slots function independently of bolt tension. The ESL is a true single piece all metal design.

Size Range
Metric: M2-M60 • Imperial: Nº8-2½″

Material Metric
Steel: Class 8 Steel • Class 10 Steel • Class 12 Steel
Stainless Steel: A2-70 Stainless Steel • A4-80 Stainless Steel

Material Imperial
Steel: Grade 5 Steel • Grade 8 Steel • Alloy Steel 180KSI (Grade 10)
Stainless Steel: AISI 304L Stainless Steel • AISI 316L Stainless Steel