What role does a spring plunger play?

By controlling the screw-in depth for threads, it enables the internal pin to set the preload and perform up and down stroke movement. It is suitable for mechanical devices, fixtures, molds, automated machinery, etc.

What is the meaning of max load and min load?

It refers to the load of the product. The min load represents the initial load value, and the max load represents the load value at the maximum press-in stroke.

What is the difference between a ball plunger and a spring plunger?

A ball plunger is headed with a steel ball and its stroke is the displacement of the ball. A spring plunger has a pin-shaped front section and the displacement stroke of the pin is used for such purposes as temporary positioning, mold demoulding and workpiece lifting.

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การยกเลิกจำหน่ายสินค้าประเภทอุปกรณ์นิวเมติกส์ (Pneumatic equipment) รุ่น “Economy Series” | Notice of End of Sales for Economy Series Pneumatic Equipment Category > คลิก

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Part Number Complete

C-SPJK3

Outer Dia. M Stroke (S) Main Body Surface Treatment Min. Load Load Type Content type Pin Material CAD Days to Ship

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
Main Body Surface Treatment
- Not Provided
- Electroless Nickel Plating
Clear
Min. Load(N)
0.11

0.5

0.51

0.62

0.8

0.97

1

1.16

1.54

1.6

1.81

2

2.8

3

3.1

3.6

4

4.2

4.6

5.1

5.5

6

6.1

9

9.4

9.6

9.9

10.4

13

13.5

18

19

19.1

24.5

26.6
Clear
Load Type
- Light load
- Ultra heavy load
Clear
Content
- Light Load
- Ultra Heavy Load
Clear
type
- E-LSPJY
- E-LSPRK
- E-LSPRX
- E-LSPRY
- E-LSPRZ
Clear
Pin Material
- Stainless Steel
  - Stainless Steel
- Others
  - Resin
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day

6 Day(s) or Less
Clear

Specify Alterations

Spring Plungers Stainless Steel, Short Stroke

Compare This Product

Volume Discount

Check FAQ of this product (3)

Brand :

MiSUMi C-VALUE

Part Number :

C-SPJK3

C-SPJK4

C-SPJK5

C-SPJK6

C-SPJK8

C-SPJK10

C-SPJX4

C-SPJX5

C-SPJX6

C-SPJX8

C-SPJX10

E-LSPJY3

E-LSPJY4

E-LSPJY5

E-LSPJY6

E-LSPJY8

E-LSPJY10

E-LSPJY12

E-LSPJY16

C-SPJK3

From :

฿ 44.38/Unit
Qty :
Days to Ship :

---
Total Price :

---

Select part number to Order Now/ Add to Cart

CAD Download

(i)Caution

Download Free! >>Economy Series Catalog ver2023 (TH-EN)_Part10 CLICK here

Product Description

- Spring Plungers Stainless Steel, Short Stroke
- C-SPJK and C-SPJX are in the MISUMI economy series ball plungers.
- Body Material: Equivalent Stainless Steel SUS304.
- Pin Material: Stainless Steel SUS303.
- Body Hardness: 20HRC～
- Spring Material: Stainless Steel SUS304
- The operating Temperature: -30 to 260℃
- Mounting Thread size: 3, 4, 5, 6, 8 and 10 mm.
- Stroke (S): 1, 1.2, 1.5, 2 and 2.5 mm.
- Load Classification: (C-SPJK) Light Load and (C-SPJX) Ultra Heavy Load.
- Wrench Hole Shape: Hex.

Product Overview

♢ This series is MISUMI economy series stainless steel spring plunger with coarse threads and mounted from the hexagon socket at the bottom. It is manufactured in China, so its price is reduced significantly, up to 93% less than other similar products.
♢ 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	Material	Hardness	Material
Stainless Steel Convex Pin	Light Load	C－SPJK	SUS304	SUS303	20HRC～	SUS304
	Ultra Heavy Load	C－SPJX

Load Classification		Type	Body	Pin	Spring
			Material	Material	Material
Stainless Steel Convex Pin	Ultra Light Load	E－LSPJY	SUS304	SUS303	SUS304
Resin Convex Pin	Utra Light Load	E－LSPRY		POM
	Light Load	E－LSPRK
	Heavy Load	E－LSPRZ
	Ultra Heavy Load	E－LSPRX

Specification Table

Part Number		d	Stroke S	L	ℓ (Reference Value)	B	Light Load		Ultra Heavy Load
Type	O.D. M (Coarse Thread)						Load (N)		Load (N)
Type	O.D. M (Coarse Thread)						min.	max.	min.	max.
C－SPJK (Light Load) C－SPJX (Ultra Heavy Load)	3	1.2	1	10	3	1.5	1	2	－	－
	4	2.1	1.2	10	2	2	2	5	4	12
	5	2.7	1.5	12	2.5	2.5	2	8	6	24
	6	3.2	1.5	12	3	3	3	10	9	30
	8	4	2	16	3.5	4	4	11	13	45
	10	5	2.5	16	4	5	4	15	19	50

kgf=N×0.101972

The min. load represents the initial load, and the max. load represents the load at the maximum press-in limit of convex pin.

There is no groove for front end riveting.

No anti-loosening treatment is applied.

C-SPJX (Ultra Heavy Load) is for O.D. M4~M10 only.

Part Number		d	Stroke S	L	ℓ (Reference Value)	B	Ultra Light Load		Light Load		Heavy Load		Ultra Heavy Load
Type	O.D. M (Coarse Thread)						Load (N)		Load (N)		Load (N)		Load (N)
Type	O.D. M (Coarse Thread)						min.	max.	min.	max.	min.	max.	min.	max.
(Stainless Steel Convex Pin) E－LSPJY (Resin Convex Pin) E－LSPRY E－LSPRK E－LSPRZ E－LSPRX	3	1.2	1	7	1	1.5	0.11	0.49	0.5	1.51	0.8	2	-	-
	4	2.1	1.2	9	1.5	2	0.51	1.54	1.6	4.8	2	9	4	11.5
	5	2.7	1.5	12	2	2.5	0.62	2.49	2	7.9	5.1	14.7	6	24.2
	6	3.2	1.5	13	2.5	3	0.97	3.06	2.8	9.9	5.5	19.6	9.4	29.5
	8	4	2	15	2.5	4	1.16	3.26	3.6	10.9	6.1	19.6	13.5	43.7
	10	5	2.5	16	3	5	1.54	4.76	4.2	14.6	9.6	29.4	19.1	53.3
	12	6	3.5	20	3	6	1.81	4.82	4.6	14.8	10.4	29.4	24.5	58.8
	16	8	4.5	22	3	8	3.1	9.1	9.9	29.3	18	58.8	26.6	78.7

Product Features

♢ It has complete specifications, which can satisfy the requirements of various sizes, lengths, and loads.
♢ It is made of all stainless steel without painting and coloring, so it is suitable for equipment with high requirements on the surface.
♢The front end has a wrench slot, and the bottom end has a hex socket mounting hole, which facilitates installation.
♢ 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.

Example of Use

When pressed down
Usage Method 1

When released
Usage Method 2

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 60; 90

Part Number
C-SPJK3
C-SPJK4
C-SPJK5
C-SPJK6
C-SPJK8
C-SPJK10
C-SPJX4
C-SPJX5
C-SPJX6
C-SPJX8
C-SPJX10
E-LSPJY3
E-LSPJY4
E-LSPJY5
E-LSPJY6
E-LSPJY8
E-LSPJY10
E-LSPJY12
E-LSPJY16

Price	Name	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Outer Dia. M (mm)	Stroke (S) (mm)	Pin Material	Main Body Surface Treatment	Min. Load (N)	Max. Load (N)	Load Type	Content
฿ 51.95	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	3	1	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	1	2	Light load	Light Load
฿ 57.79	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	4	1.2	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	2	5	Light load	Light Load
฿ 57.79	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	5	1.5	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	2	8	Light load	Light Load
฿ 61.04	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	6	1.5	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	3	10	Light load	Light Load
฿ 61.04	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	8	2	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	4	11	Light load	Light Load
฿ 79.22	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	10	2.5	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	4	15	Light load	Light Load
฿ 51.95	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	4	1.2	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	4	12	Ultra heavy load	Ultra Heavy Load
฿ 57.79	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	5	1.5	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	6	24	Ultra heavy load	Ultra Heavy Load
฿ 61.04	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	6	1.5	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	9	30	Ultra heavy load	Ultra Heavy Load
฿ 69.48	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	8	2	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	13	45	Ultra heavy load	Ultra Heavy Load
฿ 79.22	ECONOMY SPRING PLUNGER	1 Piece(s)	Available	Same day	10	10	2.5	[Stainless Steel] Stainless Steel	Electroless Nickel Plating	19	50	Ultra heavy load	Ultra Heavy Load
฿ 47.50	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	3	1	[Stainless Steel] Stainless Steel	Not Provided	0.11	0.49	-	-
฿ 44.38	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	4	1.2	[Stainless Steel] Stainless Steel	Not Provided	0.51	1.54	-	-
฿ 44.38	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	5	1.5	[Stainless Steel] Stainless Steel	Not Provided	0.62	2.49	-	-
฿ 44.38	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	6	1.5	[Stainless Steel] Stainless Steel	Not Provided	0.97	3.06	-	-
฿ 50.00	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	8	2	[Stainless Steel] Stainless Steel	Not Provided	1.16	3.26	-	-
฿ 51.88	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	10	2.5	[Stainless Steel] Stainless Steel	Not Provided	1.54	4.76	-	-
฿ 64.38	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	12	3.5	[Stainless Steel] Stainless Steel	Not Provided	1.81	4.82	-	-
฿ 104.38	ECONOMY EL_SPRING PLUNGERS	1 Piece(s)	Available	6 Day(s)	10	16	4.5	[Stainless Steel] Stainless Steel	Not Provided	3.1	9.1	-	-

Basic Information

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

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

Frequently Asked Questions (FAQ)

Question: What role does a spring plunger play?: Answer: By controlling the screw-in depth for threads, it enables the internal pin to set the preload and perform up and down stroke movement. It is suitable for mechanical devices, fixtures, molds, automated machinery, etc.
Question: What is the meaning of max load and min load?: Answer: It refers to the load of the product. The min load represents the initial load value, and the max load represents the load value at the maximum press-in stroke.
Question: What is the difference between a ball plunger and a spring plunger?: Answer: A ball plunger is headed with a steel ball and its stroke is the displacement of the ball. A spring plunger has a pin-shaped front section and the displacement stroke of the pin is used for such purposes as temporary positioning, mold demoulding and workpiece lifting.

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