Audited Supplier
Technical specification
1. Resin surface, free of bubble and crack
2. spin test: 200ºC, 3000r/min, 3min, radial deviation <0.015, bar to bar <0.006.
Spin test for common type and reinforced type
| Commutator type | Experiment temperature/time | Linear velocity of outer race of commutator m/x |
| Common type | Room temperature/10min | 50 |
| 250ºC/10min | 45 | |
| Reinforced type | Room temperature/10min | 60 |
| 235ºC/10min | 50 | |
| After testing, bar to bar deviation ≤0.003mm, outer diameter ≤0.007mm | ||
3. High voltage test: bar to shaft at 3500V for 1 min, bar to bar at 550V for 1 s.
4. Insulation test at 500V, >50MΩ
5. Application: apply to automotive industry, power tools, household appliances, and other motors
6. Commutator type: hook type, riser type, shell type or planar type
7. Copper material: sliver copper or electrolytic copper or customized
8. Dimension: from OD 4mm to OD 150mm. We also provide customized commutator.
Technical parameter:
Commutator Component: Copper/Mica/ Molding compound
Copper material: 0.03% or 0.08% sliver copper or customized
Dimension: from OD 4mm to OD 150mm. We also provide customized commutator.
Application: apply to automotive industry, power tools, household appliances, and other motors
Commutator type: hook type, riser type, shell type or planar type
Package: Suitable for land and sea transportation
Information needed for commutator inquiry:
It will be better if customer could send us detailed drawing including below information.
1. Commutator dimension: OD, ID, total height, and copper height, bar number.
2. Commutator type: hook type, raiser type or planner
3. Copper material: Agcu/ Cu
4. Commutator applications
5. Required quantity
6. Copper bush needed or not
7. Other technical requirement.
| Bars No. | Step outer diameter | Working outside diameter | Bore diameter | Copper bar height | Total height |
| 69 | 109 | 83 | 33.5 | 63 | 70 |
| 69 | 109 | 83 | 33.5 | 51.5 | 58.5 |
| 69 | 109 | 83 | 33.5 | 46.7 | 53 |
| 69 | 109 | 83 | 30 | 53 | 57 |
| 69 | 135 | 107 | 33 | 57.5 | 65.5 |
| 46 | 109 | 83 | 33.5 | 51.5 | 58.5 |
| 46 | 109 | 83 | 33.5 | 46.7 | 53 |
| 57 | 80 | 64.5 | 18 | 39.5 | 47.5 |
| 49 | 70 | 51.5 | 18 | 39.5 | 47.5 |
| 49 | 82 | 62.5 | 25 | 48 | 51 |
| 27 | 109 | 83 | 33.5 | 61.5 | 64.5 |
| 27 | 109 | 83 | 30 | 47 | 54 |
| 47 | 94 | 71 | 23 | 40.5 | 47.5 |
| 53 | 98 | 67.5 | 30 | 47 | 50 |
| 71 | 85 | 55.5 | 20 | 34 | 37 |
| 71 | 85 | 58 | 20 | 34 | 37 |
| 41 | 58 | 50.5 | 18 | 41.5 | 43.5 |
| 87 | 110.5 | 80.5 | 30 | 55 | 63 |
| 93 | 133 | 106.5 | 35 | 58 | 66 |
| 29 | 134 | 106.5 | 32 | 51.5 | 54.5 |
| 39 | 97 | 73.5 | 23 | 83 | 89 |
Our full production process strictly adhered to the ISO9001 quality control system, our higher quality , advanced equipment and technology ensure a guarantee in leakage-proof , retention and duration !
Your OEM orders are also warmly welcomed, it is our commitment to satisfy your requirement, please turst that we will be your reliable business partner for our good reputation,good quality and competitive price !
Q1 What is your terms of payment?
A1: For small order,directly pay to us after order confirmed. You pay us online after we make the trade assureance order and send payment link to you or you can pay by paypal.
A2: For big order,we use T/T, 30% in advance, balance paid before shipment.
Q2 What is your terms of delivery?
A: FOB Shanghai,Guangzhou, Shenzhen, Ningbo. Or CIF/FCA/DDP
Q3 How about your delivery time?
A: Generally, for stock goods, we send the goods as soon as we get your payment. for big order, we should consider the detailed request,then decide a time.
Q4 Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings.
Q5 What is your sample policy?
A: We can supply the sample if we have ready parts in stock,sample is free of charge, but customers have to pay the freight cost.
Q6 How do you make our business long-term and good relationship?
A1: We keep good quality and competitive price to ensure our customers' benefit;
A2: We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
