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Spring Plungers Steel Screw, Short Stroke (Part Numbers)

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Part Number

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Drawing/Specifications
Part Numbers

Product Overview

Spring Plungers Steel Screw, Short Stroke

The spring plunger is also known as the positioning column, ball screw, spring screw, etc. It is a product involving vertical stroke, in which the front pin is pressed till the pin sinks into the body and then the front pin can be ejected through the built-in spring. It can be used in mold release, workpiece lifting and positioning, etc., which can be widely applied in medium and low-precision mechanical devices, fixtures, molds, automation machines, etc.

Dimensional Drawing

Material Specification

Load Classification		Type	Body			Pin			Spring
			Material	Hardness	Surface Treatment	Material	Hardness	Surface Treatment	Material
Steel Convex Pin	Ultra Light Load	E-LSPJS	40Cr	15~20HRC	Black Oxide	1215	5~10HRC	Zinc Plating	SWP-B
	Light Load	E-LSPJL
	Heavy Load	E-LSPJH						Black Oxide
	Ultra Heavy Load	E-LSPJF			Nickel plating
Resin Convex Pin	Ultra Light Load	E-LSPRRS			Black Oxide	POM	-	_
	Light Load	E-LSPRM
	Heavy Load	E-LSPRH
	Ultra Heavy Load	E-LSPRF			Nickel plating

Specification Table

Spring Plungers Steel Screw, Short Stroke

Part Number		d	S	L	ℓ	B	Ultra Light Load		Light Load		Heavy Load		Ultra Heavy Load
Type	M (Coarse Thread)						Load (N)		Load (N)		Load (N)		Load (N)
Type	M (Coarse Thread)						min.	max.	min.	max.	min.	max.	min.	max.
(Steel Convex Pin) E-LSPJS E-LSPJL E-LSPJH E-LSPJF (Resin Convex Pin) E-LSPRRS E-LSPRM E-LSPRH E-LSPRF	3	1.2	1	7	1	1.5	0.11	0.48	0.4	1.5	0.8	2	-	-
	4	2.1	1.2	9	1.5	2	0.49	1.55	1.6	5	2	9	4.4	11.9
	5	2.7	1.5	12	2	2.5	0.53	2.53	2	7.8	4.9	14.7	4.1	24.9
	6	3.2	1.5	13	2.5	3	0.89	3.11	2.9	9.8	5.9	19.6	7.7	30.6
	8	4	2	15	2.5	4	0.9	3.14	2.9	9.8	5.9	19.6	8.6	43
	10	5	2.5	16	3	5	1.76	4.71	4.9	14.7	9.8	29.4	14.1	53.1
	12	6	3.5	20	3	6	1.96	4.82	4.9	14.7	9.8	29.4	23.1	58.3
	16	8	4.5	22	3	8	3.29	9	9.8	29.4	19.6	58.8	26.6	78.8

Product Features

♢ It has complete specifications, which can satisfy the requirements of various sizes, lengths, and loads.
♢ The front pin is available in steel type and resin type.
♢ The stroke can be fine-tuned correspondingly to the screw-in depth.
♢ The spring plunger is a product involving vertical stroke. It can be used in mold release, workpiece lifting and positioning, etc., which can be widely applied in medium and low-precision mechanical devices, fixtures, molds, automation machines, etc.

Usage Method

When pressed down

When released

: 30; 60; 90

Part Number

Part Number	Minimum order quantity	Volume Discount	Days to Ship	Outer Dia. M (mm)	Stroke (S) (mm)	Pin Material	Thread Locking Treatment	Main Body Surface Treatment	Pin Surface Treatment	Min. Load (N)	Max. Load (N)

Basic Information

Body Material	Steel	Mounting Method	Screw-In	Initial Load (Range)(N)	0.01~50
Tip Heat Treatment	Not Provided	Wrench Hole Shape	Hex

Configure

62 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Outer Dia. M(mm)
3

4

5

6

8

10

12

16
Clear
Stroke (S)(mm)
1

1.2

1.5

2

2.5

3.5

4.5
Clear
Pin Material
- Steel
  - Steel
- Others
  - Resin
Clear
Thread Locking Treatment
- Not Provided
- Provided
Clear
Main Body Surface Treatment
- Black Oxide
- Nickel Plating
Clear
Pin Surface Treatment
- Not Provided
- Black Oxide
- Zinc Plating
Clear
Min. Load(N)
0.11

0.4

0.49

0.53

0.8

0.89

0.9

1.6

1.76

1.96

2

2.9

3.29

4.1

4.4

4.9

5.9

7.7

8.6

9.8

14.1

19.6

23.1

26.6
Clear
type
- E-LSPJF
- E-LSPJH
- E-LSPJL
- E-LSPJS
- E-LSPRF
- E-LSPRH
- E-LSPRM
- E-LSPRRS
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

6 Day(s) or Less

14 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: What role does a ball plunger play?: Answer: It specifies the stroke of the front ball and can be used for temporary positioning and indexing of workpieces.
Question: What role does a spring plunger play?: Answer: With pin-shaped front section, it can be used to eject workpieces or stoppers.
Question: What is the meaning of load min and max?: Answer: The min. load represents the initial load, and the max. load represents the load at the maximum press-in limit of ball head.
Question: Can the knob plunger withstand radial force?: Answer: No, it can only withstand axial force.