WPU-CDH Series – Flat Type

Open Type Unit

The WPU-CDH Series features an ultra-flat, housed gear design engineered for compact spaces where precision and performance are essential. Incorporating FLEXWAVE gear technology, it delivers zero backlash, smooth operation, and high load capacity in a lightweight, easy-to-integrate configuration. Ideal for applications that require low-profile, high-accuracy motion control.

Features:

Zero backlash
Ultra-flat, space-saving design
Compact and easy to integrate
High load capacity for demanding applications
Lightweight construction

Downloads

Selection Configurator

Flat Type D Catalog

Model Selection Flow

* For code details, check Dimensions Table

Ratio Matrix Availability

Frame Size	50 Reduction Ratio	80 Reduction Ratio	100 Reduction Ratio	120 Reduction Ratio	160 Reduction Ratio
35	✔️	✔️	✔️	✔️	❌
42	✔️	✔️	✔️	✔️	✔️
50	✔️	✔️	✔️	✔️	✔️
63	✔️	✔️	✔️	✔️	✔️
80	✔️	✔️	✔️	✔️	✔️

Reducer Specifications

Frame Size	Ratio R^*1	Nominal Output Torque ^*2 [Nm]	Maximum Output Torque ^*3 [Nm]	Emergency Stop Torque^*4 [Nm]	Nominal Input Speed ^*5 [r/min)	Maximum Input Speed ^*6 [r/min)	Life ^*7 [hours]
35	50	3.7	12	24	3000	8500	7000
35	80	5.4	16	29	3000	8500	7000
35	100	5.4	19	31	3000	8500	7000
42	50	11	23	48	3000	7300	7000
42	80	15	29	52	3000	7300	7000
42	100	16	37	55	3000	7300	7000
42	120	16	37	55	3000	7300	7000
50	50	17	39	69	3000	6500	7000
50	80	24	51	75	3000	6500	7000
50	100	28	57	76	3000	6500	7000
50	120	28	57	76	3000	6500	7000
63	50	27	96	127		5600	7000
63	80	44	96	147	3000	5600	7000
63	100	47	110	152	3000	5600	7000
63	120	47	110	152	3000	5600	7000
80	05	53	151	268	3000	4800
80	80	82	212	334	3000	4800	7000
80	100	98	233	359	3000	4800	7000
80	120	96	233	359	3000	4800	7000

Reduction ratio is to be calculated by the formula in the previous page, using R value in this table.
The maximum allowable value at the input rotation speed of 2000r/min
The maximum torque when starting and stopping.
The maximum torque when it receives shock.
The maximum average input speed.
The maximum input speed.
The life time at the input rotation speed of 2000 r/min and nominal output torque.

Open Type: Unit

WPU-□-□-CDH Dimensions

Frame Size	Weight Kg	Moment of Inertia x10-⁴kgm²
35	0.46	0.0228
42	0.63	0.0571
50	0.91	0.113
63	1.6	0.344
80	3.0	1.18

[mm]

Frame Size	LA	LB	LC	LD	LE	LF	LG	LH	LJ	LK	LM	LN	N	LU
35	64	70	49	48	22	21.5	0.5	2.5	3.9	4.9	12.9	2.8	6	3.5
42	74	80	59	56	22.7	22.2	0.5	2.5	1.4	3.7	13.4	2.8	8	3.5
50	84	90	69	64	26.8	24.5	2.3	2.5	4.3	4.8	16.3	2.8	8	3.5
63	102	110	84	80	31.5	29.4	2.1	3	3.5	5.5	18.5	3.4	10	4.5
80	132	142	110	106	37	34.2	2.8	3	2.5	6	20.5	3.5	10	5.5

Frame Size	SA	SB	SC	SD	SE	SF	CZ	M	ST	SU
35	42	30	11	11	17	4	38	8	M3 X 5	M3
42	50	34	11	15	21	5	45	10	M5 X 6	M3
50	60	40	16	20	26	5.2	53	8	M4 X 7	M3
63	73	52	20	24	30	6.3	66	8	M5 X 8	M3
80	96	70	30	32	40	8.6	86	8	M6 X 10	M4