RV / Harmonic ReducersCSF

CSF Series Harmonic Drive Reducer

The CSF Series Harmonic Drive Reducer is available from Source Engineering Inc. in Santa Clara, CA for OEM rv harmonic reducers programs. Contact us for sizing, customization, samples, and volume pricing.

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Product Details

Harmonic Reducer

The strain wave reducer of CSF series have a standard cup-shaped flexspline, the input shaft is matched with the inner hole of wave generator through Oldham’s coupling which has a function of certain self-alignment.

Rated Parameters

Product Description

Model	Reduction ratio	Rated torque@2000 r/min (N-m)	Permissible peak torque of starting/stopping (N-m)	Permissible max. value of ave. load torque (N-m)	Instantaneous permissible max. torque (N ·m)	Permissible max input rotational speed (r/min)	Permissible ave input rotational speed (r/min)	Inertia moment(×10-4kgm²)	Life indesign (h)
14	50	5.4	18	6.9	35	8500	3500	0.033	10000
	80	7.8	23	11	47
	100	7.8	28	11	54
17	50	16	34	26	70	7300	3500	0.079	10000
	80	22	43	27	87
	100	24	54	39	108
20	50	25	56	34	98	6500	3500	0.193	10000
	80	34	74	47	127
	100	40	82	49	147
	120	40	87	49	147
25	50	39	98	55	186	5600	3500	0.413	10000
	80	63	137	87	255
	100	67	157	108	284
	120	67	167	108	304
32	50	76	216	108	382	4800	3500	1.690	10000
	80	118	304	167	568
	100	137	333	216	647
	120	137	353	216	686

Transmission accuracy/Lost motion/Max. backlash quantity

Transmission accuracy

Model\Reduction ratio	14	17	20	25	32
50	1.8	1.8	1.5	1.5	1.5
80 or more	1.5	1.5	1.2	1.2	1.2

Lost motion

Model\Reduction ratio	14	17	20	25	32
50	2.0	2.0	2.0	2.0	2.0
80 or more	1.0	1.0	1.0	1.0	1.0

Max. backlash quantity

Model\Reduction ratio	14	17	20	25	32
50	60	60	36	36	36
80	40	40	32	32	32
100	35	35	35	30	30
120				28	28

Torsional rigidity

Symbol\Model		14	17	20	25	32
T₁	N·m	2.00	3.90	7.00	14.0	29.0
T₂	N·m	6.90	12.0	25.0	48.0	108
Reduction ratio 50	K₁ (×10⁴N-m/rad)	0.34	0.81	1.30	2.50	5.40
	K₂ (×10⁴N-m/rad)	0.47	1.10	1.80	3.40	7.80
	K₃ (×10⁴N-m/rad)	0.57	1.30	2.30	4.40	9.80
	θ₁ (arc min)	2.00	1.70	1.80	1.90	1.90
	θ₂ (arc min)	5.60	4.20	5.30	5.40	5.40
Reduction ratio 80 or more	K₁ (×10⁴N-m/rad)	0.47	1.00	1.60	3.10	6.70
	K₂ (×10⁴N-m/rad)	0.61	1.40	2.50	5.00	11.0
	K₃ (×10⁴N-m/rad)	0.71	1.60	2.90	5.70	12.0
	θ₁ (arc min)	1.40	1.30	1.50	1.50	1.50
	θ₂ (arc min)	4.20	3.30	3.90	3.80	4.00

Specification Table/Outline drawing

CSF Series Harmonic Drive Reducer drawing

Note: The engagement length of bolt should be less than the depth of internal thread. ΦS represents the shape of the through hole which leads to the inside of the product. The shape of the output flange will be different according to different models of reducers. For details of dimensions, please confirm the delivered outline drawing with reducer.

Symbol\Model		14	17	20	25	32
ΦA		73	79	93	107	138
B*		41+0-0.9	45+0-0.9	45.5+0-1.0	52+0-1.0	62+0-1.1
C		34	37	38	46	57
D*	CSF	7+0-0.8	8+0-0.9	7.5+0-1.0	6+0-1.0	5+0-1.1
E		27	29	28	36	46
F		7	8	10	10	12
G		2	2	3	3	3
H		3.5	4	5	5	5
I		16.5	16.5	16.5	18.5	22.5
J		4.5	4.5	4	4.5	5.5
K		12	12	12.5	14	17
L		0.5	0.5	0.5	0.5	1.0
M1		9.4	9.5	9	12	15
N(+0 -0.1)	CSF	17.6	19.5	20.1	20.2	22
φ0 h7		56	63	72	86	113
φP		55	62	70	85	112
φQ		42.5	49.5	58	73	96
ΦR1 H7		11	10	14	20	26
φS		8	7	10	15	20
ΦT h7		38	48	56	67	90
φU h7		6	8	12	14	14
V		一	9.4+0.1+0	13.8+0.1+0	16.3+0.1+0	16.3+0.1+0
W Js9			3	4	5	5
φX		23	27	32	42	55
Y		6	6	8	8	8
Z		M4X8	M5X10	M6X9	M8X12	M10X15
a		1	1	1.5	1.5	1.5
Φb		65	71	82	96	125
C	CSF	6	6	6	8	12
Φd		4.5	4.5	5.5	5.5	6.6
Φe		38	45	53	66	86
f	CSF	6	6	6	8	12
g		M4	M4	M5	M5	M6
h		29X0.5	34.5X0.8	40.64X1.14	53.28X0.99	S71:70.5X2
i		48X2	53X2	66X2	78X2	102X2
Φk		31	38	45	58	78
Φm		10	10.5	15.5	20	27
		21.4	23.5	23	29	37
t*	CSF	2	2	2.4	2.8	3
u*	CSF	6	7	7.4	8.8	11
Φy		14	18	21	26	26
Wight(kg)		0.52	0.68	0.98	1.5	3.2

*Specification with * mark: The B, D, t, u indicate the mounting positions in the shaft direction and allowance of the three parts–wave generator, flex spline, circular spline. Strictly follow the requirement of these specifications as they affect the performance and intensity.

*The dimension tolerances are existing according to different manufacturing methods.

*The wave generator is packed separately when the product is delivered.

Key Features

CSF Series Harmonic Drive Reducer: OEM motion component configured for your application
Custom output shafts, motor adapters, and mounts available
US engineering support with overseas manufacturing cost structure
Prototype to production volumes

Configuration Options

Custom output shafts, input gears, and motor mounting flanges on request
Prototype samples through production volumes

Applications

Robot arms
Precision positioners
Machine tools
Aerospace mechanisms

When to Choose This Model

Choose harmonic or cycloidal reducers for high reduction ratios with compact size and high torsional stiffness.

Frequently Asked Questions

What is the CSF Series Harmonic Drive Reducer used for?

The CSF Series Harmonic Drive Reducer is used in OEM motion-control applications. Contact us to match torque, speed, and mounting to your design.

Can you customize this model?

Yes. Output shafts, ratios, input gears, and motor mounting interfaces can be customized for OEM programs.

How do I get pricing and lead time?

Request a quote with your quantity, target specs, and timeline. We typically respond within one business day.

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