Acceptance set (metric)



Front-mounted type	Back-mounted type

Installation dimensions

Front assembly

Ball lock shaft diameter	Formal style	Actual outer diameter -0.01/-0.02	Clearance hole diameter E	Counterbore +0.010/+0.003 F
13	49556	35	13.5	35
16	49557	37	21.0	37
20	49551	45	21.0	45
25	49552	55	25.5	55
30	49553	60	30.5	60
35	49554	70	40.0	70
50	49555	92	55.0	92

Depth +0.025/-0.025 G	Tap Size & Depth ¹ H	Bolt hole arrangement diameter (3 evenly spaced holes)	Minimum foundation slab thickness D
11.91	M4×0.7×7	25	20
11.91	M4×0.7×7	29	20
16.21	M5×0.8×9	35	25
20.32	M6×1.0×10	42	30
22.15	M6×1.0×11	48	35
22.99	M8×1.25×17	56	40
31.50	M10×1.5×18	75	50

Rear assembly

Ball lock shaft diameter (mm)	Back-mounted part number	Actual outer diameter A+0.04/+0.03	Depth B+0.025/-0.025	Counterbore inner diameter C±0.15	Minimum thickness of the foundation slab D
13	49566	20	6.92	26	20
16	49567	22	7.24	29	20
20	49561	28	8.74	33	25
25	49562	35	10.54	41	25
30	49563	42	10.95	49	30
35	49564	48	12.50	55	35
50	49565	67	15.75	76	45

Locating Sleeve (Metric)

The repeat positioning accuracy will determine whether one or two primary locating sleeves are required. When using two primary locating sleeves, if the center-to-center distance between the two holes is within a tolerance of ±0.005 mm, the repeat positioning accuracy can be maintained within ±0.013 mm.

Installation precautions for the locating sleeve and the rear mounting-type receiving sleeve: To minimize the risk of the shaft being unable to be removed from the bore, the maximum interference fit between the bore and the outer diameter of the receiving sleeve shall not exceed 0.013 mm.

Ball lock shaft diameter (mm)	Fixture plate thickness +0.13/-0.13	Primary positioning sleeve		Secondary positioning sleeve		Locating sleeve outer diameter +0.00/-0.01
Ball lock shaft diameter (mm)	Fixture plate thickness +0.13/-0.13	Case Number	The Inner Canon	Case Number	Inner diameter	Locating sleeve outer diameter +0.00/-0.01
13	13	49755	13.01	49855	13.04	19.040
13	20	49756	13.01	49856	13.04	19.040
16	20	49757	16.01	49857	16.04	25.042
16	25	49758	16.01	49858	16.04	25.042
20	20	49751	20.01	49851	20.04	35.042
20	25	49752	20.01	49852	20.04	35.042
25	20	49761	25.01	49861	25.04	35.042
25	25	49762	25.01	49862	25.04	35.042
30	20	49771	30.01	49871	30.04	45.042
30	25	49772	30.01	49872	30.04	45.042
35	20	49781	35.01	49881	35.04	45.042
	25	49782	35.01	49882	35.04	45.042
	40	49783	35.01	49883	35.04	45.042
	50	49784	35.01	49884	35.04	45.042
50	20	49791	50.01	49891	50.04	63.546
	25	49792	50.01	49892	50.04	63.546
	40	49793	50.01	49893	50.04	63.546
	50	49794	50.01	49894	50.04	63.546

Exhibition

Introduction

Baoding Fanxu Machinery Manufacturing Co., Ltd. is a specialized supplier of precision workholding systems, including vises, fixtures, and zero-point positioning solutions for high-end CNC machine tools. As both a manufacturer and a top-tier distributor of international brands such as Jergens (USA) and Schunk (Germany), we serve advanced industries including aerospace, automotive, and mold-making with high-precision, reliable products that enhance manufacturing efficiency and support industrial upgrading.