The dimensions correspond to the following drive mechanism groups in accordance with DIN 15020, sheet 1:
for manual operation: 1 Bm
for motor-driven operation: 1 Am or 2m depending upon use
Cable pulley: pulley-Ø = 21 - 40 x cable-Ø (relative to cable centreline)
Bearings: cable pulley
Pulley block: maintenance-free, self-lubricating bearings
Material: cable pulley GG 20, steel fixing plate and pulley holder 

Typ		WZ 41	WZ 42	WZ 42,5	WZ 43	WZ 43,5	WZ 44
max. cable load per pulley
kg manual operation		250	500	750	1000	1500	2000
kg power operation		125	250	375	500	750	1000
specified cable-	Ø mm	4-5	5-6	6-8	8-10	10-12	12-14
Maße in mm	Ø a	120	150	190	235	280	325
	Ø b	100	125	160	200	240	280
	g	85	107,5	115	135	155	185
	h	130	200	210	260	310	330
	i	190	245	260	310	350	420
	k	150	230	240	300	350	380
	l	8	10	12	14	16	20
	m	114	144	167	196	241	281
	Ø n	11,5	11,5	14	18	22	26
	o	65	85	90	110	120	150
	p	34	47	49	56	68	72
	mounting hole WZ 41 + WZ 42 = 4 units, Wz 42,5 - WZ 44 = 6 units

Simple, low-price design, for hand winches only
Cable groove: cast grooved profile
Bearings: no bearing bushing
Material: grey cast iron GG 20

Typ		WZ 31	WZ 32	WZ 32,5	WZ 33	WZ 33,5	WZ 34
max. cable load per pulley
kg manual operation		250	500	750	1000	1500	2000
kg power operation		125	250	375	500	750	1000
specified cable	Ø mm	4-5	5-6	6-8	8-10	10-12	12-14
Dimensions in mm	Ø a	120	150	190	235	280	325
	Ø b	100	125	160	200	240	280
	g	100	140	140	160	180	220
	h	130	200	210	260	310	330
	i	120	170	170	200	220	270
	k	150	230	240	300	350	380
	l	6	8	10	12	14	16
	m	112	142	165	199	239	277
	Ø n	11,5	11,5	14	18	18	22
	p	32	45	47	59	66	68