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Acme Screw & Lead Screw Products

Nook manufactures precision acme screws and lead screws by thread rolling, thread milling, or thread grinding processes. Each process produces high precision screws with centralized thread forms for smooth, no-wedging performance. We offer the largest selection of rolled acme screw sizes in the industry. Rolled Thread Screws are stocked for quick delivery.

  • No noise because there are no rolling components
  • Ideal for vertical and light load applications
  • Preloaded nut assembly reduces or completely eliminates backlash (wide application scope)
  • Safe to operate when the unit has a static load to hold
  • Self-locking - no need to apply brakes, even in situations of power outage
  • Low cost solution

Inch Precision Acme Screws

Inch Precision Acme Screws

Acme Screw and Nut assemblies provide turn key solutions that only require a power source (hand operation or motor). All of the elements are available for quick delivery from shelf stock. Twin-lead acme screws offer dual opposing motion using a single drive system. These one-piece high performance acme screws are made from high alloy steel that is black oxided for protection and can be assembled with Nook PowerAc™ acme nuts, flanges and EZZE-MOUNT™ bearing supports to form cost effective systems.

ROLLED ACME SCREWS
Nook offers the largest selection of rolled acme screw sizes in the industry. Rolled thread screws are cost effective and are stocked for quick delivery.

MILLED ACME SCREWS
Milled thread screws allow more variety in journal machining, particularly where a design requires the journal O.D. to be larger
than the screw major diameter.

GROUND ACME SCREWS
Ground thread screws offer higher lead accuracy for applications where positioning tolerances are extremely critical.

 

Inch Precision Acme Nuts

Inch Precision Acme Nuts

BRONZE ACME NUT

  • Tensile Yield: 50,000 psi
  • Tensile Ultimate: 65,000 psi
  • Hardness: HB75
  • Dynamic co-efficient of friction: 0.125 with Nook Lubricant

PLASTIC ACME NUT

• Tensile Strength @70°F: 8,000 psi
• Compressive Strength @70°F: 16,000 psi
• PV Limit: 2,700 lubricated
• Co-efficient of friction: 0.10 lubricated

Metric Precision Acme Screws

Metric Precision Acme Screws

TRAPEZOIDAL SCREW AND NUT
Similar in construction and materials to PowerAc™ Inch Acme Screws and Nuts, the Trapezoidal thread form has been enhanced to include a centralizing thread form to prevent wedging and binding. See the PowerAc™ technical data on pages 54-59 for additional screw and nut details.


  • Standard lead accuracy: is ±6.25μm / 25mm
    Temperature Range: Plastic Nuts: -9° to +79° C
    Bronze Nuts: -9° to +177° C

Trapezoidal Lead Nut

Trapezoidal Lead Nut

BRONZE ACME NUT

  • Tensile Yield: 50,000 psi
  • Tensile Ultimate: 65,000 psi
  • Hardness: HB75
  • Dynamic co-efficient of friction: 0.125 with Nook Lubricant

PLASTIC ACME NUT

• Tensile Strength @70°F: 8,000 psi
• Compressive Strength @70°F: 16,000 psi
• PV Limit: 2,700 lubricated
• Co-efficient of friction: 0.10 lubricated

Acme Screw Related Products

Acme Screw End Supports

EZZE-MOUNT™ precision bearing blocks can be assembled to ball screws and lead screws screws, providing a complete solution for most linear motion applications. Both end bearing mounts and end machining are offered as a complete assembly.

Acme Screw End Machining

Linear motion applications utilizing a ball screw or an acme screw require this screw end machining to be matched with precision bearing mounts. Nook offers both end bearing mounts and end machining as a complete assembly.

Acme Screw Lubricant

PAG-1 Grease & E-100 Aerosol Spray

Prolong Reliability and Life

Proper lubrication is the key to continued performance and reliability of acme screw assemblies. Use E-100 spray and PAG-1 grease lubricants to maximize life of your acme screw assembly.