Bushings for Locating Pins Shouldered, Configurable, 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 shouldered, custom dimension, thin wall type offers a wide range of dimensions and specifications, 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-JBHUFP	E-JBHUF	Equivalent to 9CrWMn (Alloy Tool Steel or Bearing Steel)	-	55HRC～
E-JBHUFBP	E-JBHUFB	Equivalent to 9CrWMn (Alloy Tool Steel or Bearing Steel)	Ferroferric Oxide Protective Film	55HRC～
E-JBHUFMP	E-JBHUFM	Equivalent to 9CrWMn (Alloy Tool Steel or Bearing Steel)	Electroless Nickel Plating	55HRC～
E-JBHUFCP	E-JBHUFC	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)	H	T
Type	D	D Tolerance
		p7	m7
(p7) E-JBHUFP E-JBHUFBP E-JBHUFMP E-JBHUFCP (m7) E-JBHUF E-JBHUFB E-JBHUFM E-JBHUFC	5	+0.024 +0.012	+0.016 +0.004	2.20～ 3.00	3.00~5.00	1.00~1.40	9	2.5
	6	+0.030 +0.015	+0.021 +0.006	3.00~4.00	3.00~5.50	1.00~1.50
	7			3.51～ 5.00	3.0～ 6.0	1.00~1.74	11
	8			4.51～ 6.00	3.0~10.0		12	3
	9			4.51～ 6.50		1.25~2.24	13.5
	10			6.51～ 8.00	3.0~15.0	1.00~1.74	14
	11	+0.036 +0.018	+0.025 +0.007	8.00～ 9.00		1.00~1.50	15
	12			8.51～ 9.00		1.50~1.74	16	4
	13			8.51~10.00	10.0~35.0	1.50~2.24	17
	14			9.00~11.00		1.50~2.50	18
	15			10.51~12.00		1.50~2.24	19
	17			10.51~13.00		2.00~3.24	21	5
	18			12.51~14.00		2.00~2.74	22
	19	+0.043 +0.022	+0.029 +0.008		5.0~35.0	2.50~3.25	24
	20			13.51~15.00	10.0~35.0	2.50~3.24	26
	21			13.51~15.00	5.0~35.0	2.50~3.75
	22			13.51~17.00	10.0~35.0	2.50~4.24
	25			15.51~19.00		3.00~4.74	30
	26			16.51~20.00		3.00~4.74
	30			20.51~24.00		3.00~4.74	35	6
	31	+0.051 +0.026	+0.034 +0.009	20.51~24.00	5.0~35.0	3.50~5.24	36
	35			25.01~29.00	12.0~50.0	3.00~4.99	40

When P≤3.59, L+T≤P×2.5　　When P≥3.60，L+T≤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