Bushings for Locating Pins Configurable, Straight, Thin Wall

The fixture bushing is a mechanical positioning part that is used in conjunction with a positioning pin to achieve a guiding effect, in which the thin wall, custom dimension, straight type offers a wide range of dimensions, easy to install, suitable for bushings with compact spacing, and can effectively prevent the rapid wear of the workpiece.

The p7 type has a larger inner diameter shrinkage rate compared to the m7 type, so be careful when machining holes. (See Precautions for the inner diameter change after press-fit)The I.D. tolerance of bushing is high. If a vernier caliper is used for detection, the measurement result will be too small. It is recommended to use a high-precision measuring tool (internal micrometer or plug gauge, etc.) for detection.

■Material Specification Table

Type		Material	Surface Treatment	Hardness
p7	m7
E-JBAUFP	E-JBAUF	Equivalent to 9CrWMn (Alloy Tool Steel or Bearing Steel)	-	55HRC～
E-JBAUFBP	E-JBAUFB	Equivalent to 9CrWMn (Alloy Tool Steel or Bearing Steel)	Ferroferric Oxide Protective Film	55HRC～
E-JBAUFMP	E-JBAUFM	Equivalent to 9CrWMn (Alloy Tool Steel or Bearing Steel)	Electroless Nickel Plating	55HRC～
E-JBAUFCP	E-JBAUFC	Martensitic stainless steel	-	45HRC～

If there are requirements for rust prevention, give priority to products with surface treatment of electroless nickel plating.

Part Number				P 0.01mm increments	L 0.1mm increments	Wall Thickness(N)
Type	D	D Tolerance
		p7	m7
(p7) E-JBAUFP E-JBAUFBP E-JBAUFMP E-JBAUFCP (m7) E-JBAUF E-JBAUFB E-JBAUFM E-JBAUFC	5	+0.024 +0.012	+0.016 +0.004	2.20~3.00	5.0~7.5	1.00~1.40
	6	+0.030 +0.015	+0.021 +0.006	3.00~4.00	5.0~8.00	1.00~1.50
	7			3.51~5.00	5.0~8.0	1.00~1.74
	8			4.51~6.00	5.0~13.0
	9			4.51~6.50		1.25~2.24
	10			6.51~8.00	5.0~20.0	1.00~1.74
	11	+0.036 +0.018	+0.025 +0.007	8.00~9.00		1.00~1.50
	12			8.51~9.00		1.50~1.74
	13			8.51~10.00		1.50~2.24
	14			9.00~11.00		1.50~2.50
	15			10.51~12.00	10.0~40.0	1.50~2.24
	17			10.51~13.00		2.00~3.24
	18			12.51~14.00		2.00~2.74
	19	+0.043 +0.022	+0.029 +0.008		5..0～40.0	2.50~3.25
	20			13.51~15.00	10.0~40.0	2.50~3.24
	21				5..0～40.0	3.00~3.75
	22			13.51~17.00	10.0~40.0	2.50~4.24
	25			15.51~19.00		3.00~4.74
	26			16.51~20.00
	30			20.51~24.00		3.00~4.74
	31	+0.051 +0.026	+0.034 +0.009	20.51~24.00	5.0~60.0	3.50~5.24
	35			25.01~29.00	12.0~60.0	3.00~4.99

When P≤3.59, L≤P×2.5　　When P≥3.60, L≤P×3.0

①Dimensional tolerance and fit parameter table For details, click Dimensional Tolerance Fit Table

②Change in inner diameter of the fixture bushing during press-fit

■Change in inner diameter of the fixture bushing during press-fit
The fixture bushing shrinks when press-fitted.
The shrinkage rate varies depending on material of mounting part and D dimension tolerance of bushing.③Reference table for common dimensions without indicated tolerance (medium accuracy m) For details, click Table of Dimensions Without Indicated Tolerance

①Positioning technology reference information Click Positioning Technology
②Surface treatment related anti-rust ability salt spray test reference Click Anti-rust Reference for Metal