Plungers

About Plungers

Plungers are machine elements for positioning and fixing workpieces.
A spring is built into the main body so that the ball (pin) at the tip sinks into the body when a load is applied, and is returned to its former position by spring force when the load is removed.
Ball plungers with moving tip balls and pin plungers with moving tip pins are available.
They are used in applications such as positioning and indexing of sliding mechanisms and workpiece extrusion.
The spring-loaded reciprocating mechanism of the ball (pin) can be incorporated easily in devices and equipment.

Image PAF PAFS FP MP MPS PSS PSSS PSP PSP-N
Part Name Miniature Ball Plunger Miniature Ball Plunger (Made of Stainless Steel) Miniature Ball Plunger - with Nylon Lock Miniature Ball Plunger - with Nylon Lock Miniature Ball Plunger (Made of Stainless Steel) Small Plunger Small Plunger Short Stroke Plunger Short Stroke Plunger
Part Number PAF PAFS FP MP MPS PSS PSSS PSP PSP-N
Feature Good Cost
Performance		 Good Cost
Performance		 Light load
Spinning ball		 Heavy-loaded
Spinning ball		 Spinning ball Small Plunger Small Plunger Pin Plunger with
Vibration Resistant Treatment		 Light load
Thread Part Material Steel Stainless Steel Steel Stainless Steel Stainless Steel - - Steel Steel
Ball/ Pin Material Steel Stainless Steel Steel Steel Stainless Steel - - Steel Plastic
Thread Size M3 ～ M16 M3 ～ M16 M2 ～ M16 M2 ～ M16 M2 ～ M16 M4 ～ M16 M4 ～ M16 M3 ～ M12 M5 ～ M12
Load 1N ～ 116.3N 1N ～ 116.3N 0.7N ～ 49N 1.2N ～ 98N 1.2N ～ 116N 1.6N ～ 59N 2N ～ 78.7N 0.29N ～ 98.1N 2N ～ 14.7N
Vibration Resistant Treatment Yes Yes Yes Yes No Yes No Yes Yes
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List PAF-10-H PAF-10-H-P PAF-10-L PAF-10-L-P PAF-10-M PAF-10-M-P PAF-12-H PAF-12-H-P PAF-12-L PAF-12-L-P PAF-12-M PAF-12-M-P PAF-16-H PAF-16-H-P PAF-16-L PAF-16-L-P PAF-16-M PAF-16-M-P PAF-3-H PAF-3-H-P PAF-3-L PAF-3-L-P PAF-3-M PAF-3-M-P PAF-4-H PAF-4-H-P PAF-4-L PAF-4-L-P PAF-4-M PAF-4-M-P PAF-5-H PAF-5-H-P PAF-5-L PAF-5-L-P PAF-5-M PAF-5-M-P PAF-6-H PAF-6-H-P PAF-6-L PAF-6-L-P PAF-6-M PAF-6-M-P PAF-8-H PAF-8-H-P PAF-8-L PAF-8-L-P PAF-8-M PAF-8-M-P PAFS-10-H PAFS-10-H-P PAFS-10-L PAFS-10-L-P PAFS-10-M PAFS-10-M-P PAFS-12-H PAFS-12-H-P PAFS-12-L PAFS-12-L-P PAFS-12-M PAFS-12-M-P PAFS-16-H PAFS-16-H-P PAFS-16-L PAFS-16-L-P PAFS-16-M PAFS-16-M-P PAFS-3-H PAFS-3-H-P PAFS-3-L PAFS-3-L-P PAFS-3-M PAFS-3-M-P PAFS-4-H PAFS-4-H-P PAFS-4-L PAFS-4-L-P PAFS-4-M PAFS-4-M-P PAFS-5-H PAFS-5-H-P PAFS-5-L PAFS-5-L-P PAFS-5-M PAFS-5-M-P PAFS-6-H PAFS-6-H-P PAFS-6-L PAFS-6-L-P PAFS-6-M PAFS-6-M-P PAFS-8-H PAFS-8-H-P PAFS-8-L PAFS-8-L-P PAFS-8-M PAFS-8-M-P FP-10 FP-12 FP-16 FP-2 FP-3 FP-4 FP-5 FP-6 FP-8 MP-10 MP-12 MP-16 MP-2 MP-3 MP-4 MP-5 MP-6 MP-8 MPS-10 MPS-10-Z MPS-12 MPS-12-Z MPS-16 MPS-16-Z MPS-2 MPS-3 MPS-3-Z MPS-4 MPS-4-Z MPS-5 MPS-5-Z MPS-6 MPS-6-Z MPS-8 MPS-8-Z PSS-10-1 PSS-10-2 PSS-12-1 PSS-12-2 PSS-16-1 PSS-16-2 PSS-4-1 PSS-4-2 PSS-5-1 PSS-5-2 PSS-6-1 PSS-6-2 PSS-8-1 PSS-8-2 PSSS-10-1 PSSS-10-3 PSSS-12-1 PSSS-12-3 PSSS-16-1 PSSS-16-3 PSSS-4-1 PSSS-4-3 PSSS-5-1 PSSS-5-3 PSSS-6-1 PSSS-6-3 PSSS-8-1 PSSS-8-3 PSP-10-5 PSP-10-5-S PSP-10-5-Z PSP-12-5 PSP-12-5-S PSP-12-5-Z PSP-3-1.5 PSP-3-1.5-S PSP-3-3 PSP-3-3-S PSP-4-2 PSP-4-2-S PSP-4-4 PSP-4-4-S PSP-4B-2-S PSP-5-3 PSP-5-3-S PSP-5-5 PSP-5-5-S PSP-5B-3 PSP-6-3 PSP-6-3-S PSP-6-5 PSP-6-5-S PSP-8-3 PSP-8-3-S PSP-8-3-Z PSP-8-4 PSP-8-4-S PSP-8-5 PSP-8-5-S PSP-8-5-Z PSP-10-5-N PSP-12-5-N PSP-5-3-N PSP-5-5-N PSP-6-3-N PSP-6-5-N PSP-8-3-N PSP-8-5-N
Image PSPS PSPS-N PLP PST PSTS
Part Name Short Stroke Plungers (Made of Stainless Steel) Short Stroke Plungers (Made of Stainless Steel) Long Stroke Plunger Spring Stop Spring Stop
Part Number PSPS PSPS-N PLP PST PSTS
Feature Pin Plungers Pin Material
Plastic		 Long Stroke Positioning
Stopper		 Positioning
Stopper
Thread Part Material Stainless Steel Stainless Steel Steel Stainless Steel Stainless Steel
Ball/ Pin Material Stainless Steel Plastic Steel Steel Steel
Thread Size M4 ～ M12 M4 ～ M12 M16 ～ M30 - -
Load 2N ～ 63.6N 2N ～ 63.6N 6.9N ～ 290N 21N ～ 161N 21N ～ 161N
Vibration Resistant Treatment No No Yes No No
CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications
List PSPS-10-5-S PSPS-10-5-Z PSPS-12-5-S PSPS-12-5-Z PSPS-4-2-S PSPS-4-2-Z PSPS-5-3-S PSPS-5-3-Z PSPS-6-3-S PSPS-6-3-Z PSPS-8-3-S PSPS-8-3-Z PSPS-10-5-NS PSPS-10-5-NZ PSPS-12-5-NS PSPS-12-5-NZ PSPS-4-2-NS PSPS-4-2-NZ PSPS-5-3-NS PSPS-5-3-NZ PSPS-6-3-NS PSPS-6-3-NZ PSPS-8-3-NS PSPS-8-3-NZ PLP-12-10-SS PLP-16-10-S PLP-16-10-SS PLP-16-15-S PLP-16-15-SS PLP-16-20-S PLP-16-20-SS PLP-16-30-S PLP-16-30-SS PLP-16B-10-S PLP-16B-10-SS PLP-24-15-S PLP-24-15-SS PLP-30-20-S PLP-30-20-SS PST-10 PST-10-N PST-15 PST-15-N PST-20 PST-20-N PSTS-10 PSTS-15 PSTS-20

Related products

Image Wrench for Pin Plunger Plunger Holder Ball Button Locating Pin Bushing for Locating Pin - Straight Type Bushing for Locating Pin - Flange Type
Part Name Wrench for Pin Plunger Plunger Holder Ball Button Locating Pin Bushing for Locating Pin - Straight Type Bushing for Locating Pin - Flange Type
Part Number PPW PHL BB PJP PJA PJB
Feature Dedicated Wrench Holder for use with Plunger Used in combination with Plunger
For Heavy Load		 For Locating
Parallel Pin		 Used in combination with PJP Used in combination with PJP
CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List PPW-10 PPW-12 PPW-16 PPW-24 PPW-30 PPW-5 PPW-6 PPW-8 PHL-M10-A PHL-M12-A PHL-M16-A PHL-M5-A PHL-M6-A PHL-M8-A BB-10 BB-12 BB-16 BB-4 BB-5 BB-6 BB-8 PJP-10-25 PJP-10-30 PJP-12-40 PJP-3-10 PJP-3-15 PJP-3-20 PJP-4-10 PJP-4-15 PJP-4-20 PJP-5-10 PJP-5-15 PJP-5-18 PJP-5-20 PJP-6-10 PJP-6-15 PJP-6-18 PJP-6-20 PJP-8-20 PJP-8-25 PJP-8-30 PJA-10 PJA-12 PJA-5 PJA-6 PJA-8 PJB-10 PJB-12 PJB-5 PJB-6 PJB-8

Latest

Hints for correctly using NBK products: Pin Plungers

Hints for correctly using NBK products: Pin Plungers

Introducing usage methods for plungers ideal for pushing out workpieces.

Hints for correctly using NBK products: Ball Plungers

Hints for correctly using NBK products: Ball Plungers

Introducing usage methods for plungers ideal for slide mechanism positioning.

Description of Plungers for Engineers

Description of Plungers for Engineers

Description of Machine elements for Designers Plungers Edition page. Plungers are machine elements for positioning and fixing workpieces. We offer a clear introduction to plungers, the advantages of their use, various usage examples, and their types and characteristics.

Designs and Examples of What NBK Can Create

Designs and Examples of What NBK Can Create

NBK provides comprehensive support for your various needs. This page introduces various types of support NBK can provide. In addition to these, please feel free to contact us with any other requests you may have.

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