Round Bellows

Stitched construction are especially designed for ball screws, shafts, columns and spindles. Our Round bellows have a very stable form and stay perfectly in shape, which makes them suitable for long-term, highly demanding applications.

Our special design guarantees maintenance free operations. Round bellows joints with flange and/or sleeve are possible. Please indicate the working application position (horizontal, vertical) and the spindle diameter.

            The inner diameter of the concertina shall be 10 mm larger than the diameter of the protected spindle (shaft).

            Standard material: GN 807 (high tensile strength chemical fiber tissue with PU-coating). Temperature resistant from −40°C / 14°F to +120°C / 274°F.

            For use at high temperatures and in welding applications, aluminized fiberglass tissue resistant up to +450°C / 870°F is used.

Abbreviations

AD – Outer diameter

ID – Inner diameter

FB – Width of fold

FZD – Contraction per fold

FHub – Lift per fold

Lmin. – Minimal compression

Lmax. – Maximal extension

Moulded Leather Bellows

Characteristics

We have one of the largest selections of Moulded Leather-Bellows in the world. We can currently offer 50,000 different types and styles. All bellows are made of a special composition of PVC-materials. These bellows can be used within a normal temperature range of −20°C / −4°F and +80°C / 176°F. They offer an excellent seal and protection against dust. We also manufacture soft PVC bellows according to your specifications. Die costs are moderate.

Following tables show the different types available

Sewn Round Bellows

Moulded Round Bellows

Thermic-Flex Round Bellow

Moulded Leather Bellows — Inner diameter 10 – 89

Type	Inner Ø mm	Inner Ø Inch	Outer Ø mm	Outer Ø Inch	Lmin mm	Lmin Inch	Lmax mm	Lmax Inch
18	18	0.71	28	1.10	4	0.16	12	0.47
20	20	0.79	36	1.42	4.5	0.18	18	0.71
22	22	0.87	40	1.57	5	0.20	20	0.79
25	25	0.98	36	1.42	5	0.20	15	0.59
25	25	0.98	45	1.77	5.5	0.22	24	0.94
28	28	1.10	40	1.57	5.5	0.22	19	0.75
28	28	1.10	50	1.97	5.5	0.22	23	0.91
32	32	1.26	46	1.81	5	0.20	16	0.63
32	32	1.26	56	2.20	6.5	0.26	26	1.02
36	36	1.42	50	1.97	5	0.20	17	0.67
36	36	1.42	63	2.48	7	0.28	28	1.10
40	40	1.57	56	2.20	6	0.24	21	0.83
40	40	1.57	71	2.80	7.5	0.30	34	1.34
45	45	1.77	63	2.48	6.5	0.26	22	0.87
45	45	1.77	80	3.15	7	0.28	34	1.34
50	50	1.97	71	2.80	6	0.24	23	0.91
50	50	1.97	89	3.50	8	0.31	39	1.54
56	56	2.20	80	3.15	6.5	0.26	27	1.06
56	56	2.20	89	3.50	7.5	0.30	36	1.42
56	56	2.20	100	3.94	8.5	0.33	45	1.77
63	63	2.48	89	3.50	6.5	0.26	26	1.02
63	63	2.48	100	3.94	7.5	0.30	36	1.42
63	63	2.48	110	4.33	7.5	0.30	40	1.57
63	63	2.48	125	4.92	7.5	0.30	48	1.89
71	71	2.80	100	3.94	7	0.28	30	1.18
75	75	2.95	100	3.94	7	0.28	28	1.10
75	75	2.95	125	4.92	7.5	0.30	42	1.65
75	75	2.95	140	5.51	7.5	0.30	55	2.17
75	75	2.95	150	5.91	7.5	0.30	58	2.28
80	80	3.15	100	3.94	7	0.28	24	0.94
80	80	3.15	110	4.33	7.5	0.30	32	1.26
80	80	3.15	125	4.92	7.5	0.30	44	1.73
80	80	3.15	140	5.51	7.5	0.30	53	2.09
80	80	3.15	150	5.91	8	0.31	58	2.28
80	80	3.15	160	6.30	8	0.31	65	2.56
89	89	3.50	110	4.33	7.5	0.30	24	0.94
89	89	3.50	125	4.92	8	0.31	36	1.42
89	89	3.50	140	5.51	8	0.31	46	1.81
89	89	3.50	150	5.91	8	0.31	55	2.17
89	89	3.50	160	6.30	8	0.31	60	2.36
89	89	3.50	170	6.69	8.5	0.33	65	2.56

Moulded Leather Bellows — Inner diameter 100 – 150

Type	Inner Ø mm	Inner Ø Inch	Outer Ø mm	Outer Ø Inch	Lmin mm	Lmin Inch	Lmax mm	Lmax Inch
100	100	3.94	128	5.04	7.5	0.30	29	1.14
100	100	3.94	140	5.51	8	0.31	40	1.57
100	100	3.94	150	5.91	8	0.31	46	1.81
100	100	3.94	160	6.30	8	0.31	55	2.17
100	100	3.94	170	6.69	8.5	0.33	60	2.36
100	100	3.94	180	7.09	9	0.35	65	2.56
110	110	4.33	130	5.12	7.5	0.30	24	0.94
110	110	4.33	140	5.51	7.5	0.30	30	1.18
110	110	4.33	150	5.91	8	0.31	40	1.57
110	110	4.33	160	6.30	8	0.31	47	1.85
110	110	4.33	170	6.69	8	0.31	56	2.20
110	110	4.33	180	7.09	8.5	0.33	60	2.36
110	110	4.33	190	7.48	9	0.35	65	2.56
110	110	4.33	200	7.87	9	0.35	70	2.76
120	120	4.72	150	5.91	8	0.31	30	1.18
120	120	4.72	160	6.30	8	0.31	40	1.57
120	120	4.72	170	6.69	8	0.31	47	1.85
120	120	4.72	180	7.09	8.5	0.33	55	2.17
120	120	4.72	190	7.48	9	0.35	60	2.36
120	120	4.72	200	7.87	9	0.35	65	2.56
125	125	4.92	150	5.91	7.5	0.30	28	1.10
125	125	4.92	160	6.30	8	0.31	38	1.50
125	125	4.92	170	6.69	8.5	0.33	42	1.65
125	125	4.92	180	7.09	8.5	0.33	52	2.05
125	125	4.92	190	7.48	8.5	0.33	57	2.24
125	125	4.92	200	7.87	8.5	0.33	62	2.44
125	125	4.92	210	8.27	9	0.35	68	2.68
140	140	5.51	160	6.30	7.5	0.30	24	0.94
140	140	5.51	170	6.69	8	0.31	30	1.18
140	140	5.51	180	7.09	8.5	0.33	40	1.57
140	140	5.51	190	7.48	9	0.35	47	1.85
140	140	5.51	200	7.87	10	0.39	56	2.20
140	140	5.51	210	8.27	10	0.39	60	2.36
140	140	5.51	220	8.66	10	0.39	65	2.56
150	150	5.91	170	6.69	8	0.31	24	0.94
150	150	5.91	180	7.09	8.5	0.33	30	1.18
150	150	5.91	190	7.48	9	0.35	40	1.57
150	150	5.91	200	7.87	9	0.35	47	1.85
150	150	5.91	210	8.27	10	0.39	56	2.20
150	150	5.91	220	8.66	10	0.39	60	2.36
150	150	5.91	230	9.06	10	0.39	65	2.56
150	150	5.91	240	9.45	10	0.39	70	2.76

Moulded Leather Bellows — Inner diameter 160 – 210

Type	Inner Ø mm	Inner Ø Inch	Outer Ø mm	Outer Ø Inch	Lmin mm	Lmin Inch	Lmax mm	Lmax Inch
160	160	6.30	190	7.48	8.5	0.33	30	1.18
160	160	6.30	200	7.87	9	0.35	40	1.57
160	160	6.30	210	8.27	10	0.39	47	1.85
160	160	6.30	220	8.66	10	0.39	56	2.20
160	160	6.30	230	9.06	10	0.39	60	2.36
160	160	6.30	240	9.45	10	0.39	65	2.56
160	160	6.30	250	9.84	10	0.39	70	2.76
170	170	6.69	200	7.87	9	0.35	30	1.18
170	170	6.69	210	8.27	10	0.39	40	1.57
170	170	6.69	220	8.66	10	0.39	47	1.85
170	170	6.69	230	9.06	10	0.39	56	2.20
170	170	6.69	240	9.45	10	0.39	60	2.36
170	170	6.69	250	9.84	10	0.39	65	2.56
170	170	6.69	260	10.24	10	0.39	70	2.76
180	180	7.09	210	8.27	9	0.35	30	1.18
180	180	7.09	220	8.66	10	0.39	40	1.57
180	180	7.09	230	9.06	10	0.39	47	1.85
180	180	7.09	240	9.45	10	0.39	56	2.20
180	180	7.09	250	9.84	10	0.39	60	2.36
180	180	7.09	260	10.24	10	0.39	65	2.56
190	190	7.48	220	8.66	9	0.35	30	1.18
190	190	7.48	230	9.06	10	0.39	40	1.57
190	190	7.48	240	9.45	10	0.39	47	1.85
190	190	7.48	250	9.84	10	0.39	60	2.36
190	190	7.48	260	10.24	10	0.39	70	2.76
190	190	7.48	280	11.02	10	0.39	75	2.95

Moulded Leather Bellows — Inner diameter 220 – 650

Type	Inner Ø mm	Inner Ø Inch	Outer Ø mm	Outer Ø Inch	Lmin mm	Lmin Inch	Lmax mm	Lmax Inch
220	220	8.66	250	9.84	10	0.39	30	1.18
220	220	8.66	260	10.24	10	0.39	40	1.57
220	220	8.66	280	11.02	10	0.39	57	2.24
220	220	8.66	300	11.81	10	0.39	70	2.76
220	220	8.66	320	12.60	10	0.39	80	3.15
230	230	9.06	260	10.24	10	0.39	30	1.18
230	230	9.06	280	11.02	10	0.39	48	1.89
230	230	9.06	300	11.81	10	0.39	65	2.56
230	230	9.06	320	12.60	10	0.39	75	2.95
240	240	9.45	280	11.02	10	0.39	40	1.57
240	240	9.45	300	11.81	10	0.39	58	2.28
240	240	9.45	320	12.60	10	0.39	70	2.76
240	240	9.45	360	14.17	10	0.39	90	3.54
250	250	9.84	280	11.02	10	0.39	30	1.18
250	250	9.84	300	11.81	10	0.39	45	1.77
250	250	9.84	320	12.60	10	0.39	60	2.36
250	250	9.84	360	14.17	11	0.43	85	3.35
280	280	11.02	320	12.60	10	0.39	40	1.57
280	280	11.02	360	14.17	10	0.39	72	2.83
280	280	11.02	400	15.75	11	0.43	90	3.54
300	300	11.81	360	14.17	10	0.39	60	2.36
300	300	11.81	400	15.75	10	0.39	80	3.15
320	320	12.60	360	14.17	10	0.39	40	1.57
320	320	12.60	400	15.75	10	0.39	72	2.83
320	320	12.60	450	17.72	11	0.43	100	3.94
360	360	14.17	400	15.75	10	0.39	40	1.57
360	360	14.17	450	17.72	10	0.39	80	3.15
360	360	14.17	510	20.08	11	0.43	110	4.33
400	400	15.75	450	17.72	10	0.39	50	1.97
400	400	15.75	510	20.08	10	0.39	85	3.35
400	400	15.75	530	20.87	11	0.43	100	3.94
450	450	17.72	490	19.29	10	0.39	40	1.57
450	450	17.72	510	20.08	10	0.39	55	2.17
450	450	17.72	530	20.87	11	0.43	75	2.95
450	450	17.72	560	22.05	12	0.47	85	3.35
510	510	20.08	650	25.59	12	0.47	105	4.13
560	560	22.05	650	25.59	12	0.47	75	2.95
650	650	25.59	770	30.31	12	0.47	90	3.54

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Characteristics

Sewn Round Bellows

Moulded Round Bellows

Thermic-Flex Round Bellow

Need Round Bellows or Moulded Leather Bellows?