Spacer washers / conical counterbore / material selectable / treatment selectable

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Back to the Category Washers/Collars (metal)

Technical Drawing - Washers/Collars (metal)

Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Washers/Collars (metal)

Standard	Dimension Configurable	Material	Surface Treatment
-	FWSRC	EN 1.1191 Equiv.	-
WSRB	FWSRB		Black Oxide
WSRM	FWSRM		Electroless Nickel Plating
-	FWSRA	Aluminum Alloy 2000 series	Clear Anodize
WSRS	FWSRS	EN 1.4301 Equiv.	-

Further specifications can be found under the tab More information.

Composition of a Product Code - Washers/Collars (metal)

Part Number	-	D	-	V	-	E	-	Q	-	T
WSRM14									-	2.5
FWSRS	-	D17.5	-	V6.5	-	E3			-	T7.5
WBAB30			-	V8			-	Q18	-	T3

Alterations - Washers/Collars (metal)

General Information - Washers/Collars (metal)

Selection Details of Discs and Sleeves

- Material: steel, stainless steel, aluminum, brass, tool steel
- Coating: untreated, burnished, nickel-plated, LTBC coating, anodized, chrome-plated
- Basic shapes: straight, with collar, sleeve, disc, front panel with open oblong hole
- Designs: through hole, two through holes, bolt circle, oblong hole, counterbore, conical counterbore, internal thread
- Hardness: up to ~55HRC
- ISO tolerances: g6, h7
- Inner diameter: 0 mm to 90 mm
- Outer diameter: 3 mm to 100 mm
- Length: 1 mm to 200 mm

Overview of the various designs as PDF

Description/Basics

A spacer sleeve or distance washer serves as a spacer in mechanical engineering to maintain a predetermined position. Unlike the known washers, spacer sleeves and distance washers are not punched. Spacer sleeves, which are also known as spacer sleeves, have a precise length. Their length tolerance (precision class) is up to +/- 0.01 mm. A spacer sleeve can therefore also be used as a bearing sleeve of rolling bearings.
These metal sleeves and discs are available at MISUMI either unhardened or hardened. Particularly hard discs and sleeves have a high level of wear resistance. Stainless steel sleeves and stainless steel washers are well protected against oxidation in corrosive environments. Spacer sleeves or distance sleeves can be configured with collar (flange). The height of the government is also tolerated and can also be used for maintaining a distance.

Due to the individual configuration of the distance sleeve and spacer washer, they offer nearly an unlimited use in mechanical engineering.

Areas of Application

The spacer sleeve or distance washer is suitable for many mechanical engineering applications due to its tolerable height. Compared to the commercially available washer, the distance washer can have a larger bearing surface. The special form as a countersunk washer is well suited for shaft mounting at the shaft end.
The precisely manufactured spacer sleeve is suitable for precisely maintaining a distance between two components. If several sleeves are necessary for this, MISUMI offers simultaneous grinding spacer sleeves. Due to the matched length of the grinding distance sleeves, which are used as a set (min. 2 pieces), a flat surface can be formed. In addition, the simultaneously ground sleeves can reduce play, because the height difference from one another is limited to +/- 5μ.
Alternatively, the metal disc or the metal collar can be suitable as a spring disk in order to serve a pressure spring as a receiver or stopper.

At MISUMI, you can configure the distance washer and distance sleeve to your specifications and order it online. The additionally selectable options extend the design freedom of the metal collars and metal discs.

Materials

Metal collars and metal discs in steel, tool steel and stainless steel are available in the MISUMI online shop. Stainless steel sleeves and washers provide good corrosion resistance and can be used in corrosive environments.

Alternatively, MISUMI offers discs and sleeves made of plastic and ceramic as well as thermally insulating materials for special environmental influences.
In addition, MISUMI offers discs and sleeves made of rubber and felt, which can work with diverse properties, e.g., antistatic and vibration damping.

Coatings

MISUMI sleeves and discs are available uncoated, burnished, nickel-plated, LTBC-coated, anodized and chrome-plated versions to protect metal sleeves and metal washers from corrosion and wear.

Dimensions

Overview of the geometric variants as PDF

Standard class and precision class of the spacer sleeve

(1) Spacer sleeve – standard class, (2) spacer sleeve – precision class

Standard class and precision class of the spacer disc

(1) Spacer washer – standard class, (2) spacer washer – precision class

Application Examples - Washers/Collars (metal)

(1) Plate, (2) spacer washer, (3) screw – hexagon socket

(1) Screw, (2) metal washer, (3) metal collar, (4) natural rubber plate

(1) Spacer sleeve, (2) ball bearing, (3) rotary shaft

(1) Distance sleeve/spacer sleeve

Supplementary Article

Ball bearing

Shims

Washers / Collars (Non-Metal, Plastic)

Washers / Collars (Urethane, Rubber, Sponge, Felt)

Shoulder bolts

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry

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Data to be displayed: 30; 45; 60

Part Number
WSRB25-5
WSRB25-5

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	O.D. D (mm)	I.D. (mm)	Thickness/Length (mm)	Material	Surface Treatment	Countersink Depth E (Ø)	Countersink Depth E (mm)
	2.91 €	1	Available	10 Days	10	25	9	-	[Steel] EN 1.1191 Equiv.	Black Oxide	5	-
	-	1		10 Days	10	25	9	5	[Steel] EN 1.1191 Equiv.	Black Oxide	5	-

Back to the Category Washers/Collars (metal)

Technical Drawing - Washers/Collars (metal)

Overview of the various designs as PDF

Specification Tables - Washers/Collars (metal)

■Countersunk, Standard

Part Number		T	E	V	Unit Price
Type	D	Selection			WSRB	WSRM	WSRS
WSRB WSRM WSRS	14	2.5	2.5	4.5
		4
		5
	16	3	3	5.5
		4
		5
	20	3.5	3.5	6.6
		4
		5
	25	5	5	9
		6
	30	6	6	11
		8

■Countersunk, Dimension Configurable

Part Number	D	V 0.5mm Increment (V3 or More)	E 0.5mm Increment	T 0.5mm Increment	Unit Price
Part Number	D	V 0.5mm Increment (V3 or More)	E 0.5mm Increment	T 0.5mm Increment	FWSRC	FWSRB	FWSRM	FWSRA	FWSRS
FWSRC FWSRB FWSRM FWSRA FWSRS	10.0~20.0 (0.5mm Increment)	2.0 2.6 3~30	2.0~10.0 E≤T	2.0~ 5.0
	10.0~20.0 (0.5mm Increment)			5.5~10.0
	21~30 (1mm Increment)			2.0~ 5.0
	21~30 (1mm Increment)			5.5~10.0
	31~40 (1mm Increment)			2.0~ 5.0
	31~40 (1mm Increment)			5.5~10.0
	41~50 (1mm Increment)			2.0~ 5.0
	41~50 (1mm Increment)			5.5~10.0
	51~60 (1mm Increment)			2.0~ 5.0
	51~60 (1mm Increment)			5.5~10.0
(D-V)/2-E≥11mm or more is required for the min. thickness.
Circularity cannot be guaranteed because the thickness V becomes 0 when E=T.

Alterations - Washers/Collars (metal)

Products homepage

Basic information

Shape	Straight	Inner Shape	Flat Head Screw	O.D. Tolerance	0 to -0.2
I.D. Tolerance	+0.3 to +0.1	Sale Type	Sold Separately	Dimension Specifying Method	Dimension Selectable
Hardness(HRC)	No Hardened	Precision	Standard Grade

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Basic Attributes

Thickness/Length(mm)
5

5.5

6

7

8

10
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Countersink Depth E(mm)
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Type
- FWSRA
- FWSRB
- FWSRC
- FWSRM
- FWSRS
- WSRB
- WSRM
- WSRS
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O.D. D(mm)
14

16

20

25

30

40

50
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I.D.(mm)
2

2.6

4.5

5.5

6.6

9

11
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Material
- Steel
  - EN 1.1191 Equiv.
- Stainless Steel
  - EN 1.4301 Equiv.
- Aluminum
  - Aluminum Alloy 2000 series
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Surface Treatment
- Not Provided
- Black Oxide
- Electroless Nickel Plating
- Anodize (Clear)
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Countersink Depth E(Ø)
- 2.5
- 3
- 3.5
- 5
- 6
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