Bosch Rexroth Electric Drives and Controls

Tightening spindle		Spindle bearing				Measurement transducer		Planetary gearbox		EC motor
Working range ¹⁾	Max. output drive speed	Range of spring	Tool mount	Code	Order no.	Code	Order no.	Code	Order no.	Code	Order no.
[Nm]	[1/min]	[mm]
6 - 52	1000	25	1/2" square	GK1A156	0608800031	4DMC060	0608820114	4GE19	0608720056	EC304	0608701018
		25	7/16" quick-change chuck	GK1B156	0608800020
		25	1/2" square with centering pin	GK1C156	0608800001
		50	1/2" square	GK2A181	0608800006
		50	1/2" square	GK2A251	0608800048
		50	7/16" quick-change chuck	GK2B181	0608800008
		50	7/16" quick-change chuck	GK2B251	0608800049
		50	1/2" square with centering pin	GK2C181	0608800021
		50	1/2" square with centering pin	GK2C251	0608800050
		50	1/2" square	GL2A319	0608800056
		50	7/16" quick-change chuck	GL2B319	0608800057
		50	1/2" square with centering pin	GL2C319	0608800027
6 - 56	340	25	1/2" square	GK1A156	0608800031			4GE59	0608720040
		25	7/16" quick-change chuck	GK1B156	0608800020
		25	1/2" square with centering pin	GK1C156	0608800001
		50	1/2" square	GK2A181	0608800006
		50	1/2" square	GK2A251	0608800048
		50	7/16" quick-change chuck	GK2B181	0608800008
		50	7/16" quick-change chuck	GK2B251	0608800049
		50	1/2" square with centering pin	GK2C181	0608800021
		50	1/2" square with centering pin	GK2C251	0608800050
		50	1/2" square	GL2A319	0608800056
		50	7/16" quick-change chuck	GL2B319	0608800057
		50	1/2" square with centering pin	GL2C319	0608800027
15 - 150		25	1/2" square	GK1A156	0608800031	4DMC160	0608820115
		25	7/16" quick-change chuck	GK1B156	0608800020
		25	1/2" square with centering pin	GK1C156	0608800001
		50	1/2" square	GK2A181	0608800006
		50	1/2" square	GK2A251	0608800048
		50	7/16" quick-change chuck	GK2B181	0608800008
		50	7/16" quick-change chuck	GK2B251	0608800049
		50	1/2" square with centering pin	GK2C181	0608800021
		50	1/2" square with centering pin	GK2C251	0608800050
		50	1/2" square	GL2A319	0608800056
		50	7/16" quick-change chuck	GL2B319	0608800057
		50	1/2" square with centering pin	GL2C319	0608800027

Side-by-side arrangement of tightening spindels (center-to-center distance)
	Number of tightening spindles	2	3	4	5	6
	Smallest circle diameter Ø dmin [mm]	59	69	89	109	119

¹) Accuracy is limited if operating below the working range.