Elevator Chains Quality KU 4 and KU 5

Elevator Chains Quality KU 4 and KU 5

Technological values of quality KU 4 and KU 5

The technological values of quality KU 4 and KU 5 are designed for use in elevators with short chain strands and clamps for fixing the buckets.

	Chains		Clamps
KU quality	KU 4	KU 5	KU 4	KU5
Proof load N/mm²	125	150	125	240³⁾
Breaking load N/mm²	250	300	280	400³⁾
Surface hardness at back of clamp HB			240 – 360	300 – 360
Surface hardness in the radius HV 30	800¹⁾	800¹⁾	> 600	> 600
Carburizing depth HTA	0,1	0,1
Case hardening depth EHT	0,06²⁾	0,06²⁾	0,1	0,1
1) ± 5% 2) from 30 mm – f 0.05 d 550 HV 3) depending on width – 10% possible	Manganese steel	Chrome-nickel alloy quality steel	Heat-treated fine-grained steel	Chrome-molybdenum alloy quality steel

Elevator chains quality KU 4 and KU 5 to DIN 764/766

KU 4
Highly wear-resistant round-link chains stamped KU 4, made to DIN 764/766 from non-ageing special manganese steel, matched in pairs of equal length. Surface hardness over 800 HV measured 0.25 mm below the surface. Carburizing depth HTA 0.1 d±0.01 d. Case hardening depth EHT at 0.06 d over 550 HV up to 28 mm diameter; from 30 mm diameter upwards 0.05 d over 550 HV.
Proof stress 125 N/mm2, breaking stress 250 N/mm2.

KU 5
Highly wear-resistant round-link chains stamped KU 5, made to DIN 764/766 from non-ageing, corrosion-resistant chrome-nickel alloy quality steel, matched in pairs of equal length. Surface hardness over 800 HV measured 0.25 mm below the surface. Carburizing depth HTA 0.1d±0.01d. Case hardening depth EHT at 0.06 d over 550 HV up to 28 mm diameter; from 30 mm upwards 0.05 d over 550 HV.
Proof stress 150 N/mm2, breaking stress 300 N/mm2.

Elevator Chains Quality KU 4 and KU 5 – image 2

DIN 764					KU 4			KU 5
Nominal diameter d/mm	Pitch t/mm	Outer width b/mm	Number links n	Weight per chain kg	Tensile force kN	Proof load kN	Breaking load kN	Tensile force kN	Proof load kN	Breaking load kN
10	35	34	9	0,66	10	20	40	12	24	48
13	45	44	9	1,5	16	32	64	20	40	80
16	56	54	9	2,7	25	50	100	30	60	120
18	63	60	9	3,8	32	63	126	38	76	151
20	70	67	7	4,2	40	80	160	48	96	192
23	80	77	7	6,2	50	100	200	60	120	240
26	91	87	7	9,0	63	126	252	76	151	302
30	105	101	7	14,5	85	170	340	102	204	408
36	126	122	7	24,0	125	250	500	150	300	600
39	136	132	7	29,5	140	280	560	168	336	672
42	147	142	7	38,0	170	340	680	204	408	816

DIN 766					KU 4			KU 5
Nominal diameter d/mm	Pitch t/mm	Outer width b/mm	Number links n	Weight per chain kg	Tensile force kN	Proof load kN	Breaking load kN	Tensile force kN	Proof load kN	Breaking load kN
10	28	34	11	0,72	10	20	40	12	24	48
13	36	44	11	1,5	16	32	64	20	40	80
16	45	54	11	2,9	25	50	100	30	60	120
18	50	60	9	3,3	32	63	126	38	76	151
20	56	67	9	4,6	40	80	160	48	96	192
23	64	77	9	7,0	50	100	200	60	120	240
26	73	87	7	7,7	63	126	252	76	151	302
30	84	101	7	12,0	85	170	340	102	204	408
36	101	122	7	21,0	125	250	500	150	300	600
39	109	132	7	26,0	140	280	560	168	336	672
42	118	142	7	33,0	170	340	680	204	408	816

Some chains with other numbers of links are also in stock. Equal lengths are matched in pairs. Pair tolerance 0.55%.