Premium Bush Chain P15f1-B/P20-B Industrial Bush Roller Chain Manufacturer

Product Description

About the Products

I.Introduction of Product:

Our bush chain is an economical power transmission chain featuring a simple pin-and-bush structure without rollers. Manufactured according to ISO and ANSI standards, it offers stable transmission, low noise and reduced maintenance requirements.

Its lightweight, durable and cost-effective design is suitable for light- and medium-duty applications, including agricultural machinery, food processing equipment, textile machinery and low-speed conveyor systems. It can operate with minimal lubrication where suitable, making it a practical solution for cost-sensitive industrial applications.

II.Parameter of Product:

Chain No.	Pitch	Bush diameter	Width between inner plates	Pin diameter	Pin length		Plate depth	Plate thickness	Tensile strength	Average tensile strength	Weight    per   meter
	P	d1 max	b1 min	d2 max	L max	Lc max	h2 max	T max	Q min	Q0	q
	mm	mm	mm	m m	mm	m m	m m	mm	kN/lbf	kN	kg/m
P15F1-B	15.00	9.00	14.0	6.0	25.3	30.0	14.0	2.03	12.5/2852.5	13.75	1.150
P20-B	20.00	12.00	16.0	8.0	33.0	36.0	18.0	3.00	25.0/5624	27.50	2.140
P20F3-B	20.00	12.00	16.0	8.0	33.0	36.0	19.0	3.00	25.0/5624	27.50	2.030
*PZ20-B	20.00	12.00	16.0	8.0	33.0	34.7	18.0	3.00	25.0/5624	27.50	2.253
P25-B	25.00	15.00	18.0	10.0	35.0	39.0	24.0	3.00	31.5/7086	34.70	3.170
P25F1-B	25.00	15.00	18.0	10.0	35.0	39.0	24.0	3.00	31.5/7086	34.70	2.670
P30F2-B	30.00	17.00	20.0	11.0	41.0	45.4	28.0	4.00	40.0/8998	44.00	4.250
P30F6-B	30.00	17.00	20.0	11.0	42.4	46.0	28.0	4.00	40.0/8998	44.00	3.750
P35F2-B	35.00	18.00	22.0	12.0	44.5	48.0	30.0	4.00	50.0/11248	55.00	4.330
P35F5-B	35.00	18.00	22.0	12.0	44.5	48.0	30.0	4.00	50.0/11248	55.00	3.770
P36-B	36.00	18.00	22.0	12.5	44.5	49.0	30.0	4.00	60.0/13497	66.00	4.200
P40-B	40.00	20.00	25.0	14.0	52.4	57.0	35.0	5.00	63.0/14172	69.30	5.430
P45-B	45.00	22.00	30.0	16.0	62.0	66.5	40.0	6.00	80.0/17996	88.00	7.540
P50-B	50.00	26.00	35.0	18.0	68.0	73.5	44.0	6.00	100.0/22495	110.00	8.900
P55-B	55.00	30.00	45.0	20.0	88.0	93.5	49.0	8.00	125.0/28119	137.50	13.920
P55F1-B	55.00	30.00	45.0	20.0	88.0	110.0	49.0	8.00	125.0/28119	137.50	13.920
P55F4-B	55.00	28.00	45.0	20.0	88.0	93.5	43.0	8.00	125.0/28100	137.50	12.400
P60-B	60.00	32.00	50.0	22.0	94.1	99.5	55.0	8.00	160.0/35993	176.00	15.200
P65-B	65.00	36.00	56.0	26.0	97.5	113.0	61.0	8.00	200.0/44960	220.00	18.900
P70-B	70.00	30.00	65.0	30.0	117.0	130.0	67.0	10.00	250.0/57050	275.00	26.270
P80-B	80.00	44.00	70.0	32.0	131.0	150.0	75.0	12.00	315.0/71883	346.00	31.800
P19.05	19.05	12.70	12.5	7.5	31.6	33.6	20.0	4.15/3.25	50.0/11248	55.00	2.560
P19.05F50-B	19.05	11.91	12.9	7.5	31.6	34.8	20.0	4.15/3.25	40.0/8992	44.00	2.530
P22.225F10-B	22.225	14.30	14.6	9.0	36.3	39.3	23.5	4.8/4.0	55.0/12364	60.50	3.580
P22.225F3-B	22.225	15.60	14.6	9.0	36.3	38.0	23.5	4.8/4.0	75.0/16860	82.50	3.750
P25.4F21-B	25.40	15.88	16.0	10.0	42.5		26.8	5.6/4.8	80.0/17984	88.00	4.700
P31.75F5-B	31.75	19.05	20.0	11.1	46.0	50.0	33.5	5.6/4.8	100.0/22480	110.00	5.980
*P42.27F1-B	42.27	13.00	22.9	7.92	41.0	45.8	24.0	3.20	42.3/9509	46.50	2.360
*P50.8F7	50.80	18.50	25.0	14.5	53.5	57.5	40.0	5.00	120.0/26994	132.00	6.300

 

III.Usages of Product:
1. Automotive & Internal Engine Systems (Core Application)
    Bush chains are extensively adopted in engine timing systems, including camshaft drives and balance shaft devices, especially for diesel engines. They provide precise synchronous transmission, lightweight performance and ultra-low noise. They are also used for motorcycle engine timing and primary transmission to reduce noise and overall costs. In automobile assembly lines, they ensure low elongation, accurate positioning and minimal maintenance for chassis and body conveying systems.
2. Agricultural Machinery
    Ideal for harsh outdoor working conditions, our bush chains are commonly installed on tractors, harvesters, seeders, balers, feed mixers and grain elevators. They reliably resist field vibration, dust, mud and temperature changes, offering stable performance with low maintenance and cost-effective operation.
3. General Industrial Machinery
    Suitable for light-to-medium power transmission on pumps, fans, compressors, small generators, mixers and extruders. They run smoothly with low vibration and high synchronization accuracy for textile, printing, packaging and woodworking machinery. They also serve small conveyors, elevators and feeding equipment requiring low-speed, stable and economical transmission.
4. Material Handling & Logistics
    Widely applied in roller conveyors, belt conveyors, bucket elevators, scraper conveyors and sorting systems. They perform steadily in dusty, high-temperature and heavy-duty environments in mining, building materials, metallurgy and warehouse logistics. With low elongation and stable positioning, bush chains are also ideal for overhead conveyors and automated assembly lines.
5. Mining & Heavy-Duty Equipment
    Bush chains work reliably on crushers, vibrating screens, scraper machines, construction machinery and metallurgical equipment. They withstand heavy loads, strong vibration, high temperature and heavy dust, providing a simpler structure and lower maintenance cost compared with standard roller chains.
6. Food & Pharmaceutical Industry
    Available in SS304 and SS316 stainless steel grades, our bush chains support oil-free or minimal-lubrication operation, effectively avoiding product contamination. perfect for food processing, beverage filling and pharmaceutical production lines with easy-clean and corrosion-resistant performance.
7. Special & Light Industry Scenarios
    They are widely used in marine and port equipment such as deck machinery and cabin conveying systems with salt spray resistance and low maintenance requirements. They also apply to household appliances like washing machines and customized non-standard light-duty transmission devices, delivering flexible structure and high cost performance.


 

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Company Profile

 

I.Why Chose us?
(1).Sophisticated production system:
    We are a manufacturer specializing in chains, sprockets, gears and matching products with a well-established production system. Our integrated production workflow includes material processing, precision machining, thermal treatment, surface treatment, assembly and full-range quality testing. Rigorous process management enables us to guarantee stable product quality, support bulk orders and flexible customized solutions for global clients.
 (2).Many partnerships with clients from different countries we have established:
    For years, as a producer of chains and related accessories, we have formed long-term friendly partnerships with clients throughout Asia, Europe, the Americas, Africa and Oceania. We fully acknowledge diverse local requirements and international standards. Based on equality and mutual benefit, we supply customized solutions suited to local operating environments. Our sincere service and dependable products win consistent recognition, helping us develop a mature global cooperation network.



(3).Certification we own:
    We have obtained a variety of professional industry certificates and official domestic certifications related to chain manufacturing. All credentials are available for verification. These certifications sufficiently demonstrate that our production management and product quality comply with relevant industrial standards. They serve as powerful proof of our overall strength, stable supply capacity and consistent product quality, bringing greater procurement confidence to our global partners.



II.Company Introduction:

    Qingdao Star Machine Technology Co.,Ltd. is located in the beautful coastal city-Qingdao.We are a large enterprise groups engaged in researching, production, marketing and technical services, having three large research and production basesand one large marketing center for transmission parts, bearings, chains, sprockets, tractor driving axles and hydraulic steering units. Covering 80,000 square meters, now we have 816 employees including 167 senior professional technicians and a global network of sales and service system. Keeping good partnership with Liaocheng University, Qingdao University, Shandong Agricultural University, Shandong University and Chinese Academy of Agricultural Sciences, we are getting great technical support from industry experts.
    "You provide a request, We'll give you a perfect product". We uphold the business philosophy" integrity, efficiency, cooperation, innovation", quality first, advanced technology, precision production, integrity management, efficient service, to supportour customers with the top quality products and super sophisticated technology.